local target_node = function(ctx,tgt)
	if not ctx.target or ctx.target.type ~= 'node' then return false end
	local node = minetest.get_node(ctx.target.under)
	if node.name ~= tgt then return false end
	return node
end;

local get_enchanter = function(ctx)
	local ench = target_node(ctx, 'sorcery:enchanter')
	if not ench then return false end
	return minetest.get_meta(ctx.target.under):get_inventory()
end

local cast_sparkle = function(ctx,color,strength,duration)
	sorcery.vfx.cast_sparkle(ctx.caster,color,strength,duration)
end

local enchantment_sparkle = function(ctx,color)
	sorcery.vfx.enchantment_sparkle(ctx.target,color)
end

local anchorwand = function(aff,uses,recipe)
	local affcolor = sorcery.lib.color(sorcery.data.affinities[aff].color)
	return {
		name = aff .. ' anchor';
		desc = 'With an enchanter, anchor ' .. aff .. ' spells into an object to enable it to produce preternatural effects';
		uses = uses;
		affinity = recipe;
		color = affcolor;
		sound = 'xdecor_enchanting'; -- FIXME make own
		cast = function(ctx)
			local node = target_node(ctx, 'sorcery:enchanter')
			if not node then return false end

			local inv = minetest.get_meta(ctx.target.under):get_inventory()
			if inv:is_empty('item') then return false end
			local subj = inv:get_stack('item',1)

			-- now we have everything we need. this part is complex.
			-- first, we need to check the item to see if it is in a
			-- group eligible for enchantment. if so, we then retrieve
			-- the item material and look up the slots offered by this
			-- material. we iterate through the slot definitions to pick 
			-- out a candidate slot, criteria being that the slot
			-- possesses the proper affinity, and that the corresponding
			-- slot on the item enchantment record is empty, then pick
			-- the final slot at random from this table if #candidates>0
			-- (otherwise, we fail unceremoniously).

			local current_enchant = sorcery.enchant.get(subj)
			local material, eligible_spells = sorcery.enchant.getsubj(subj)
			if     eligible_spells == nil
			   or #eligible_spells == 0
			   or  material == nil
			   or  material.data.slots == nil
			   or #material.data.slots == 0
				   then return false end

			-- determine the properties the enchantment will have
			local power = 10
			local energy = material.data.maxenergy
			local reliability = 100
			if ctx.base.gem == 'sapphire' then power = power + 5
			elseif ctx.base.gem == 'amethyst' then
				energy = energy * (math.random() * 0.7)
			elseif ctx.base.gem == 'diamond' then
				if math.random(5) == 1 then
					power = power * 2
					reliability = reliability - (reliability / 4)
				else
					power = power + 5
					reliability = reliability - 10
				end
			end

			local viable_slots = {}
			for i,slot in pairs(material.data.slots) do
				if sorcery.lib.tbl.has(slot.affinity,aff) then
					for _,spell in pairs(current_enchant.spells) do
						if spell.slot == i then goto nonviable end
					end
					viable_slots[#viable_slots + 1] = i
				end
			::nonviable::end
			if #viable_slots == 0 then return false end

			local target_slot = viable_slots[math.random(#viable_slots)]
			-- once we have selected an appropriate slot, we iterate
			-- through the list of known enchantments to check the
			-- affinity of each against `aff`. if the affinity matches
			-- the wand, we then check whether the 'recipe' matches.
			-- if so, we've found the enchantment -- apply it to the
			-- object and update its enchantment data. otherwise, we
			-- move on to the next. if no matching recipe is found,
			-- we give up and bail, returning 'false' to signify that
			-- a spell was not cast.

			local focus_match = function(spec,stack)
				local default_mode
				if spec.lens then
					default_mode = 'dmg'
					if minetest.get_item_group(stack:get_name(), 'sorcery_enchanting_lens') == 0
						then return false end
					local proto = stack:get_definition()._proto
					if proto.kind ~= spec.lens or proto.gem ~= spec.gem
						then return false end
				elseif spec.item then
					default_mode = 'consume'
					if stack:get_name() ~= spec.item then
						return false end
				else
					return false
				end

				local mode
				if spec.dmg then mode = 'dmg'
				elseif spec.consume then mode = 'consume'
				else mode = default_mode end

				if mode == 'dmg' then
					stack:add_wear((spec.dmg or 1) * 1000)
					return stack
				elseif mode == 'consume' then
					stack:take_item(spec.consume or 1)
					return stack
				end
			end
			for ench,data in pairs(sorcery.data.enchants) do
				if data.affinity ~= aff or data.recipe == nil then goto skip end
				local newinv = {}
				for s,v in pairs(data.recipe) do
					newinv[s] = focus_match(v,inv:get_stack('foci',s))
					if newinv[s] == false then goto skip end
				end
				-- is the tool compatible with the chosen spell? we check its groups to
				-- see if any of them grant it eligibility; if not, we skip to the next
				-- spell. NOTE: this means the same recipe could mean different things
				-- for different kinds of tools, if one were so inclined.
				for g,v in pairs(subj:get_definition().groups) do
					if v ~= 0 and sorcery.lib.tbl.has(data.groups, g)
						then goto enchant end
				end
				goto skip
				-- spell matches!
				::enchant:: current_enchant.spells[#current_enchant.spells + 1] = {
					id = ench;
					slot = target_slot;
					boost = power;
					reliability = reliability;
				}
				current_enchant.energy = math.max(current_enchant.energy, energy)

				sorcery.enchant.set(subj, current_enchant)
				inv:set_stack('item',1,subj)
				for i,v in pairs(newinv) do inv:set_stack('foci',i,v) end
				sorcery.enchant.update_enchanter(ctx.target.under)
				enchantment_sparkle(ctx,affcolor)
				do return nil end
			::skip::end
			return false
		end
	};
end
-- note: this was written before terminology was standardized,
-- and "leytype" corresponds to what is otherwise known as an
-- "affinity"; "affinity" after this comment is widely misused
return {
	flame = {
		name = 'flamebolt';
		color = {255,89,16};
		uses = 32;
		affinity = {'acacia','blazing'};
		leytype = 'praxic';
		desc = 'Conjure a gout of fire to scorch your foes with a flick of this wand';
		cast = function(ctx)
			local speed = 30 -- TODO maybe amethyst tip increases speed?
			local radius 
			if ctx.base.gem == 'sapphire'
				then radius = math.random(2,3)
				else radius = math.random(1,2)
			end
			local heading = ctx.heading
			heading.pos.y = heading.pos.y + heading.eyeheight*0.9
			local bolt = minetest.add_entity(heading.pos,'sorcery:spell_projectile_flamebolt')
			bolt:set_rotation(heading.yaw)
			local vel = {
				x = heading.yaw.x * speed;
				y = heading.yaw.y * speed;
				z = heading.yaw.z * speed;
			};
			bolt:get_luaentity()._blastradius = radius
			bolt:set_velocity(vel)
		end;
	};
	seal = {
		name = 'sealing';
		color = {255,238,16};
		uses = 32;
		desc = 'Bind an object to your spirit such that it will be rendered impregnable to others, or break a sealing created with this same wand';
		leytype = 'imperic';
		affinity = {'pine','dark'};
		cast = function(ctx)
			if ctx.target == nil or ctx.target.type ~= 'node' then return false end
			local meta = minetest.get_meta(ctx.target.under)
			-- first we need to check if the wand has an identifying 'key' yet,
			-- and set one if not.
			local modes = {
				sapphire = 'lockdown';
				diamond = 'steal';
			}
			local wandmode = modes[ctx.base.gem] or 'seal'
			local keycode
			if ctx.meta:contains('sorcery_wand_key') then
				keycode = ctx.meta:get_string('sorcery_wand_key')
			else
				keycode = sorcery.lib.str.rand(32)
				ctx.meta:set_string('sorcery_wand_key', keycode)
				-- ctx.meta:mark_as_private('sorcery_wand_key')
			end
			if meta:contains('owner') then
				-- owner is already set -- can we break the enchantment?
				if wandmode == 'steal' then
					if meta:get_string('owner') ~= ctx.caster:get_player_name() then
						meta:set_string('owner',ctx.caster:get_player_name())
						enchantment_sparkle(ctx,sorcery.lib.color(101,255,238))
					end
					return
				end

				if meta:get_string('sorcery_wand_key') == keycode then
					meta:set_string('owner','')
					meta:set_string('sorcery_wand_key','')
					meta:set_string('sorcery_seal_mode','')
					enchantment_sparkle(ctx,sorcery.lib.color(101,255,142))
				else return false end
			else
				meta:set_string('sorcery_wand_key',keycode)
				meta:mark_as_private('sorcery_wand_key')
				meta:set_string('owner',ctx.caster:get_player_name())
				if wandmode == 'lockdown' then
					meta:set_string('sorcery_seal_mode','wand')
				end
				enchantment_sparkle(ctx,sorcery.lib.color(255,201,27))
			end
		end;
	};
	leyspark = {
		name = 'Leyspark';
		leytype = 'cognic';
		color = {255,246,142}; -- bright yellow
		affinity = {'apple','silent'};
		uses = 128;
		desc = 'Reveal the strength and affinities of the local leyline';
		cast = function(ctx)
			local color = ctx.base.gem == 'sapphire';
			local duration = (ctx.base.gem == 'amethyst' and 4) or 2;
			local ley = sorcery.ley.estimate(ctx.caster:get_pos())

			local strength = ley.force
			if color then
				strength = strength / #ley.aff
				for _,a in pairs(ley.aff) do
					cast_sparkle(ctx,sorcery.lib.color(sorcery.data.affinities[a].color):brighten(1.3), strength, duration * strength)
				end
			else
				cast_sparkle(ctx,sorcery.lib.color(250,255,185), strength, duration*strength)
			end

		end;
	};
	dowse = {
		name = 'dowsing';
		leytype = 'cognic';
		color = {65,116,255};
		affinity = {'acacia','dark','silent'};
		uses = 176;
		desc = 'Send up sparks of radia to indicate nearness or absence of the blocks whose presence the wand is attuned to';
	};
	verdant = {
		name = 'verdant';
		color = {16,29,255};
		uses = 48;
		leytype = 'imperic';
		desc = 'Pour life-energy into the soil, causing flowers and trees to spring up at your command';
		affinity = {'jungle','verdant'};
	};
	praxic        = anchorwand('praxic',       16, {'pine','shimmering','blazing'});
	counterpraxic = anchorwand('counterpraxic',23, {'pine','shimmering','silent'});
	entropic      = anchorwand('entropic',      8, {'jungle','dark'});
	syncretic     = anchorwand('syncretic',    12, {'aspen','verdant','shimmering','blazing'});
	cognic        = anchorwand('cognic',       32, {'acacia','verdant','dark'});
	occlutic      = anchorwand('occlutic',     15, {'apple','silent','dark'});
	imperic       = anchorwand('imperic',       8, {'apple','verdant','blazing'});
	mandatic      = anchorwand('mandatic',     18, {'jungle','verdant','silent'});
	shape = {
		name = 'shaping';
		uses = 24;
		color = {255,114,65};
		leytype = 'praxic';
		affinity = {'apple','blazing'};
		desc = 'With an enchanter, physically alter the mundane qualities of an object';
	};
	attune = {
		name = 'attunement';
		uses = 38;
		color = {255,65,207};
		leytype = 'syncretic';
		affinity = {'pine','verdant','dark'};
		desc = 'Establish a connection between mystic mechanisms, like connecting two sides of a portal or impressing targets onto a dowsing wand in an enchanter';
		cast = function(ctx)
			if not (ctx.target and ctx.target.type == 'node') then
				ctx.meta:set_string('source','')
				cast_sparkle(ctx, sorcery.lib.color(234,45,100), 0.3)
				return true
			end
			local n = minetest.registered_nodes[minetest.get_node(ctx.target.under).name]
			if not (n and n._sorcery and n._sorcery.attune) then
				return false end -- just in case anyone casts on an undefined node
			local m = sorcery.lib.marshal
			local encpos, decpos = m.transcoder {
				x = m.t.s32, y = m.t.s32, z = m.t.s32;
				id = m.t.str;
			}
			local props = n._sorcery.attune

			local rec = ctx.meta:get_string('source')
			local src
			if rec then
				local data = decpos(sorcery.lib.str.meta_dearmor(rec,true))
				local srcpos = {x=data.x,y=data.y,z=data.z}
				local srcnode = minetest.get_node(srcpos)
				local srcdef = minetest.registered_nodes[srcnode.name]
				if srcdef and srcdef._sorcery and srcdef._sorcery.attune then
					if sorcery.attunement.nodeid(srcpos) == data.id then
						src = { 
							pos = srcpos;
							props = srcdef._sorcery.attune;
						}
					end
				end
			end

			local color
			if src and src.props.source and
			   src.props.class == props.accepts and props.target and
			   (not vector.equals(src.pos, ctx.target.under)) then
				sorcery.attunement.pair(src.props.reciprocal or true, src.pos, ctx.target.under)
				ctx.meta:set_string('source','')
				color = sorcery.lib.color(255,130,75)
			elseif props.source then
				ctx.meta:set_string('source', sorcery.lib.str.meta_armor(encpos {
					x = ctx.target.under.x;
					y = ctx.target.under.y;
					z = ctx.target.under.z;
					id = sorcery.attunement.nodeid(ctx.target.under);
				},true))
				color = sorcery.lib.color(128,75,255)
			end

			if color then enchantment_sparkle(ctx,color)
				else return false end
		end;
	};
	meld = {
		name = 'melding';
		uses = 48;
		leytype = 'syncretic';
		color = {172,65,255};
		affinity = {'apple','verdant'};
		desc = 'Meld the properties of three balanced items on an enchanter to create a new one with special properties, but destroying the old ones and losing two thirds of the mass in the process. The precise outcome is not always predictable, and may vary with the moons and the stars.';
		cast = function(ctx)
			local e = get_enchanter(ctx)
			if not e then return false end

			for _,m in pairs(sorcery.data.resonance.meld) do
				if m.restrict and not m.restrict(ctx) 
					then goto next_meld end

				local g = {}
				for i,set in ipairs(m.set) do
					if type(set) == 'table' then
						g[i] = set
					else g[i] = { take = set; } end

					local found = false
					for j=1,e:get_size('foci') do
						local match,res = sorcery.lib.item.groupmatch(g[i].take, e:get_stack('foci',j),false)
						if match then
							found = true
							g[i].slot = j
							g[i].leftover = res
							break
						end
					end
					if not found then goto next_meld end
				end
				-- we've made it past the tests; this meld
				-- matches the spec

				for _,t in pairs(g) do
					if t.leftover and t.leftover:get_count() > 0 then
						e:set_stack('foci',t.slot,t.leftover)
						if t.replacement then
							minetest.add_item(ctx.target.above, ItemStack(t.replacement))
						end
					else
						e:set_stack('foci',t.slot,ItemStack(t.replacement))
					end
				end
				
				local res
				if type(m.results) == 'function' then
					res = m.results(ctx)
				elseif type(m.results) == 'table' and m.results[1] then -- haaaack
					res = select(2,sorcery.lib.tbl.pick(m.results))
				else
					res = m.results
				end

				e:set_stack('item',1,ItemStack(res))
				enchantment_sparkle(ctx,sorcery.lib.color(228,4,201))
			::next_meld::end
		end;
	};
	divide = {
		name = 'division';
		uses = 19;
		leytype = 'syncretic';
		color = {255,65,121};
		affinity = {'apple','shimmering'};
		desc = 'Shatter an item on an enchanter, dividing its essence equally into three parts and precipitating it into new items embodying various properties of the destroyed item. The outcome is not always predictable, and may vary with the moons and the stars.';
		cast = function(ctx)
			local e = get_enchanter(ctx)
			if not e then return false end

			local orig = e:get_stack('item',1)
			local div = sorcery.data.resonance.divide[orig:get_name()]
			if not div then return false end

			local bitch = function(err)
				sorcery.log('data/spells(divide)', err .. ' for ' .. orig:get_name())
				return false
			end

			if not (div.mode and div.give) then
				return bitch('improperly specified division')
			end
			
			if div.restrict and not div.restrict(ctx) then
				return false
			end

			local dst
			if div.mode == 'any' then
				local lst = sorcery.lib.tbl.cshuf(div.give)
				dst = function(i) return lst[i] end
			elseif div.mode == 'random' then
				dst = function() return sorcery.lib.tbl.pick(div.give) end
			elseif div.mode == 'set' then
				dst = function(i) return div.give[i] end
			elseif div.mode == 'all' then
				dst = function() return div.give end
			elseif div.mode == 'fn' then
				dst = function(i) return div.give(i,ctx) end
			else return bitch('invalid division mode') end
			for i=1,e:get_size('foci') do
				e:set_stack('foci',i,ItemStack(dst(i)))
			end
			e:set_stack('item',1,ItemStack(div.replacement))

			for _,color in pairs{{245,63,63},{63,245,178}} do
				enchantment_sparkle(ctx, sorcery.lib.color(color))
			end
		end;
	};
	obliterate = {
		name = 'obliteration';
		uses = 129;
		color = {175,6,212};
		affinity = {'aspen','dark'};
		leytype = 'occlutic';
		desc = 'Incinerate all items on an enchanter, rendering them down to ash or obliterating them entirely.';
		cast = function(ctx)
			local tgt = target_node(ctx, 'sorcery:enchanter')
			if not tgt then return false end

			local inv = minetest.get_meta(ctx.target.under):get_inventory()
			for _,name in pairs{'foci','item'} do
				for i=1,inv:get_size(name) do
					local stack = 'sorcery:ash'
					if ctx.base.gem == 'sapphire' then
						stack = nil
					end
					inv:set_stack(name,i,ItemStack(stack))
				end
			end

			enchantment_sparkle(ctx,sorcery.lib.color(255,12,0))
			enchantment_sparkle(ctx,sorcery.lib.color(85,18,35))
			enchantment_sparkle(ctx,sorcery.lib.color(0,0,0))
		end
	};
	sacrifice = {
		name = 'sacrifice';
		uses = 58;
		color = {212,6,63};
		affinity = {'aspen','blazing'};
		leytype = 'syncretic';
		desc = 'Transform the matter of one to three items on an enchanter into energy and empower the item on the center of the enchanter with it. Useful to recharge wands in areas with weak leylines.';
	};
	transfer = {
		name = 'transfer';
		uses = 65;
		color = {6,212,121};
		leytype = 'syncretic';
		affinity = {'aspen','shimmering','silent'};
		desc = 'Transfer ley-current from items on an enchanter into the item in the center, but at a 50% loss if they are of mismatched affinities. One third of maximum current is transferred, and when used on items with little power may destroy them or their enchantments';
	};
	transmute = {
		name = 'transmutation';
		uses = 7;
		color = {255,90,18};
		leytype = 'imperic';
		affinity = {'aspen','shimmering','dark','blazing'};
		desc = 'Transmute three ingots into one of a different metal, determined by chance, and influenced by configuration of the wand as well as the stars and the phase of the moon';
		-- diamond = quantity varies between 1-3
	};
	disjoin = {
		name = 'disjunction';
		uses = 32;
		color = {17,6,212};
		leytype = 'occlutic';
		affinity = {'jungle','silent'};
		desc = 'With an enchanter, disjoin the anchor holding a spell into an object so a new spell can instead be bound in';
		cast = function(ctx)
			local ench = target_node(ctx, 'sorcery:enchanter')
			if not ench then return false end
			local ei = minetest.get_meta(ctx.target.under):get_inventory()
			local item = ei:get_stack('item',1)
			local e = sorcery.enchant.get(item)
			if next(e.spells) == nil then return false end
			if #e.spells == 1 then e = nil else
				if ctx.base.gem == 'sapphire'
					then e.spells = {} e.energy = 0
					else table.remove(e.spells, math.random(#e.spells))
				end
			end
			sorcery.enchant.set(item,e)
			ei:set_stack('item',1,item)
			enchantment_sparkle(ctx,sorcery.lib.color(255,154,44))
			enchantment_sparkle(ctx,sorcery.lib.color(226,44,255))
		end;
	};
	divine = {
		name = 'divining';
		desc = 'Steal away the secrets of the cosmos';
		uses = 16;
		color= {97,97,255};
		sound = 'xdecor:enchanting';
		leytype = 'cognic';
		affinity = {'pine','shimmering','dark','verdant'};
		cast = function(ctx)
			local inks = {'black','red','white','violet','blue','green'}
			local getcolor = function(stack)
				 if stack:is_empty() then return nil end
				 if minetest.get_item_group(stack:get_name(), 'dye') == 0 then return nil end
				 for _,ink in pairs(inks) do
					 if minetest.get_item_group(stack:get_name(), 'color_' ..ink) ~= 0
						 then return ink end
				 end
			end
			if not ctx.target or ctx.target.type ~= 'node' then return false end
			local tgt = minetest.get_node(ctx.target.under)
			if tgt.name == 'sorcery:enchanter' then
				local meta = minetest.get_meta(ctx.target.under)
				local inv = meta:get_inventory()
				if inv:get_stack('item',1):get_name() == 'default:paper'
					-- and inv:get_stack('item',1):get_count() == 1
					and not inv:is_empty('foci') then
				   local ink1 = getcolor(inv:get_stack('foci',2))
				   local ink2 = getcolor(inv:get_stack('foci',3))
				   local restrict, kind, mod = {} do
					   local ms = inv:get_stack('foci',1)
					   if not ms:is_empty() then mod = ms:get_name() end
				   end
				   if ink1 == 'black' and ink2 == 'black' then kind = 'craft'
					   if mod then
						   if mod == sorcery.data.metals.cobalt.parts.powder then
							   restrict.group = 'sorcery_magitech'
						   elseif mod == sorcery.data.metals.vidrium.parts.powder then
							   restrict.group = 'sorcery_ley_device'
						   elseif mod == sorcery.data.metals.aluminum.parts.powder then
							   restrict.group = 'sorcery_metallurgy'
						   elseif mod == sorcery.data.metals.lithium.parts.powder then
							   restrict.group = 'sorcery_enchanting_lens'
						   elseif mod == sorcery.data.metals.iridium.parts.powder then
							   restrict.group = 'sorcery_worship'
						   elseif mod == sorcery.data.metals.gold.parts.powder then
							   restrict.group = 'sorcery_grease'
						   elseif mod == sorcery.data.metals.silver.parts.powder then
							   restrict.group = 'sorcery_oil'
						   elseif mod == sorcery.data.metals.electrum.parts.powder then
							   restrict.group = 'sorcery_extract'
						   elseif mod == sorcery.data.metals.steel.parts.powder then
							   restrict.group = 'crafttool'
						   elseif mod == 'farming:sugar' then
							   restrict.mod = 'farming'
						   else return false end
					   end
				   elseif ink1 == 'black' and ink2 == 'white' then kind = 'infuse'
					   if mod then
						   if mod == sorcery.data.metals.gold.parts.powder then
							   restrict.mod = 'sorcery_draught'
						   elseif mod == sorcery.data.metals.cobalt.parts.powder then
							   restrict.mod = 'sorcery_philter'
						   elseif mod == sorcery.data.metals.lithium.parts.powder then
							   restrict.mod = 'sorcery_elixirs'
						   else return false end
					   end
				   elseif ink1 == 'blue' and ink2 == 'violet' then kind = 'enchant'
					   if mod then
						   if mod == sorcery.data.metals.cobalt.parts.powder then
							   restrict.aff = 'praxic'
						   elseif mod == sorcery.data.metals.tungsten.parts.powder then
							   restrict.aff = 'counterpraxic'
						   elseif mod == sorcery.data.metals.aluminum.parts.powder then
							   restrict.aff = 'syncretic'
						   elseif mod == sorcery.data.metals.lithium.parts.powder then
							   -- restrict.aff = 'mandatic' -- no enchants yet, will cause infinite loop 🙃
						   elseif mod == sorcery.data.metals.iridium.parts.powder then
							   restrict.aff = 'entropic'
						   elseif mod == sorcery.data.metals.gold.parts.powder then
							   restrict.aff = 'cognic'
						   elseif mod == sorcery.data.metals.silver.parts.powder then
							   -- restrict.aff = 'occlutic'
						   elseif mod == sorcery.data.metals.electrum.parts.powder then
							   -- restrict.aff = 'imperic'
						   else return false end
					   end
				   elseif ink1 == 'red' and ink2 == 'yellow' then kind = 'cook';
				   -- elseif ink1 == 'red' and ink2 == 'orange' then kind = 'smelt';
				   end
				   if kind then
					   local rec = ItemStack('sorcery:recipe')
					   local m = rec:get_meta()
					   if ctx.base.gem == 'diamond' then
						   -- make recipe for thing in slot 1
					   else
						   sorcery.cookbook.setrecipe(rec,kind,nil,restrict)
					   end
					   local old = inv:get_stack('item',1)
					   -- TODO: detect hopper underneath and place
					   -- recipe into it instead of item slot
					   if old:get_count() == 1 then
						   inv:set_stack('item',1,rec)
					   else
						   old:take_item(1)
						   inv:set_stack('item',1,old)
						   minetest.add_item(ctx.target.above,rec)
					   end
					   for i=1,inv:get_size('foci') do
						   local f = inv:get_stack('foci',i)
						   f:take_item(1)
						   inv:set_stack('foci',i,f)
					   end
					   enchantment_sparkle(ctx,sorcery.lib.color(97,97,255))
					   return
				   end
				end
			end
			return false
		end;
	};
	luminate = {
		name = 'lumination';
		desc = 'Banish darkness all about you for a few moments';
		uses = 40;
		color = {244,255,157};
		affinity = {'acacia','shimmering','blazing'};
		leytype = 'cognic';
		cast = function(ctx)
			local center = ctx.heading.pos
			local maxpower = 20
			local power = (ctx.base.gem == 'sapphire' and maxpower) or maxpower/2
			local range = (ctx.base.gem == 'emerald' and 6) or 3
			local duration = (ctx.base.gem == 'amethyst' and 60) or 30
			if ctx.base.gem == 'diamond' then
				power = power * (math.random()*2)
				range = range * (math.random()*2)
				duration = duration * (math.random()*2)
			end
			local lum = math.ceil((power/maxpower) * minetest.LIGHT_MAX)
			for i=1,power do
				local pos = vector.add(center, {
					x = math.random(-range,range);
					z = math.random(-range,range);
					y = math.random(0,range/2);
				})
				local delta = vector.subtract(pos,center)
				local near = 1 - (delta.x^2 + delta.y^2 + delta.z^2)/(range^2)
				if minetest.get_node(pos).name == 'air' then
					minetest.set_node(pos,{name='sorcery:air_glimmer_' .. tostring(lum)})
					do local lm = minetest.get_meta(pos)
						lm:set_float('duration',duration)
						lm:set_float('timeleft',duration)
						lm:set_float('power',lum * near)
					end
				end
			end
		end;
	};
}
