@@ -33,45 +33,50 @@
 		};
 		core = {
 			obsidian = {
 				item = 'default:obsidian_shard';
-				sturdiness = 1.5;
+				wandprops = { sturdiness = 1.5 };
 			};
 			diamond = {
 				item = 'sorcery:shard_diamond';
-				sturdiness = 1.7;
-				reliability = 0.75;
+				wandprops = { sturdiness = 1.7, reliability = 0.85 };
 			};
 			mese = {
 				item = 'default:mese_fragment';
-				generate = 2;
+				wandprops = { generate = 2 };
 			};
 			cobalt = {
 				item = 'sorcery:powder_cobalt';
-				power = 1.4;
+				wandprops = { power = 1.4 };
 			};
 			iridium = {
 				item = 'sorcery:powder_iridium';
-				sturdiness = 1.25;
-				power = 1.25;
+				wandprops = { sturdiness = 1.25, power = 1.25 };
 			};
 			lithium = {
 				item = 'sorcery:powder_lithium';
-				power = 1.7;
-				reliability = 0.85;
+				wandprops = { power = 1.7, reliability = 0.70 };
 			};
 			gold = {
 				item = 'sorcery:powder_gold';
-				duration = 1.3;
-				power = 1.3;
+				wandprops = { duration = 1.3, power = 1.3 };
 			};
 			tungsten = {
 				item = 'sorcery:powder_tungsten';
-				duration = 1.7;
-				sturdiness = 1.25;
+				wandprops = { duration = 1.7, sturdiness = 1.25 };
+			};
+			platinum = {
+				item = 'sorcery:powder_platinum';
+				wandprops = { bond = 1; }
+			};
+			vidrium = {
+				item = 'sorcery:powder_vidrium';
+				wandprops = { bond = 2; }
 			};
-			-- add one that only lets the first wielder
-			-- ever use the wand
+			impervium = {
+				item = 'sorcery:powder_impervium';
+				wandprops = { bond = 1, power = 1.5 };
+			};
 		};
 		wire = {
 			gold = {
 				-- gold limits the amount of wear-and-tear on
@@ -78,25 +83,36 @@
 				-- the wand, but causes the power to weaken as
 				-- it empties
 				tone = u.color(255,255,59);
 				tex = u.image('default_gold_block.png');
+				wandprops = { sturdiness = 1.2, weaken = 1 };
 			};
 			copper = {
 				-- copper causes the wand to recharge more quickly
 				-- but power levels are unpredictable
 				tone = u.color(255,117,40);
 				tex = u.image('default_copper_block.png');
+				wandprops = { flux = 0.7, chargetime = 0.5 };
 			};
 			silver = {
 				tone = u.color(215,238,241);
 				tex = u.image('default_gold_block'):colorize(u.color(255,238,241), 255);
+				wandprops = {};
 			};
 			steel = {
 				tone = u.color(255,255,255);
 				tex = u.image('default_steel_block');
+				wandprops = {};
 			};
 		};
-		gem = sorcery.data.gems;
+		gem = sorcery.lib.tbl.deepmerge(sorcery.data.gems, {
+			sapphire = {
+				wandprops = { sturdiness = 0.5 };
+			};
+			diamond = {
+				wandprops = { sturdiness = (1/3) };
+			};
+		})
 	};
 	util = {
 		baseid = function(wand)
 			local elts = {wand.wood}
@@ -148,8 +164,26 @@
 				proto = table.copy(proto)
 				proto.core = core
 			end
 			return proto
+		end;
+		matprops = function(proto)
+			local matprops = {}
+			for k,v in pairs(proto) do
+				if sorcery.wands.materials[k] then
+					local mp = sorcery.wands.materials[k].wandprops
+					if mp then
+						matprops = sorcery.lib.tbl.deepmerge(matprops, mp,
+							function(a,b,k)
+								if key == 'bond'
+									then return a+b
+									else return a*b
+								end
+							end)
+					end
+				end
+			end
+			return matprops
 		end;
 		basedesc = function(wand)
 			local desc = 'wand fashioned from the wood of the ' .. wand.wood .. ' tree'
 			if wand.gem ~= nil then
@@ -185,22 +219,62 @@
 	if meta:contains('sorcery_wand_spell') == false then return nil end
 	local spell = meta:get_string('sorcery_wand_spell')
 	local castfn = sorcery.data.spells[spell].cast
 	if castfn == nil then return nil end
+	local matprops = sorcery.wands.util.matprops(wand)
+	if matprops.bond then
+		local userct, found = 0, false
+		for i=1,matprops.bond do
+			local prop = 'bound_user_' .. tostring(i)
+			if meta:contains(prop) then
+				userct = i
+				local name = meta:get_string(prop)
+				print('wand bound to',name,i)
+				if name == user:get_player_name() then found = true break end
+			else break end
+		end
+		
+		if not found then
+			if userct < matprops.bond then
+				print('binding wand to caster')
+				minetest.sound_play("xdecor_enchanting", { --FIXME make own sounds
+					pos = user:get_pos();
+					gain = 0.8;
+				})
+				sorcery.vfx.cast_sparkle(user, sorcery.lib.color(25,129,255), 2)
+				meta:set_string('bound_user_' .. tostring(userct+1), user:get_player_name())
+				return stack
+			else
+				-- user not in table AND no binding slots left. UH OH
+				sorcery.vfx.cast_sparkle(user, sorcery.lib.color(255,0,0), 4)
+				sorcery.vfx.bloodburst(user:get_pos())
+				user:punch(user, 1.0, {
+					full_punch_interval = 1.0;
+					damage_groups = { fleshy = math.random(1,5) };
+				}, nil)
+				return stack
+			end
+		end
+	end
 
-	local result = castfn {
+	local uprops = user:get_properties();
+	local context = {
 		base = wand;
 		meta = meta;
 		item = stack;
 		caster = user;
 		target = target;
+		today = minetest.get_day_count();
 		heading = {
 			pos   = user:get_pos();
 			yaw   = user:get_look_dir();
 			pitch = user:get_look_vertical();
 			angle = user:get_look_horizontal();
+			eyeheight = uprops.eye_height;
 		};
+		wearmult = 1;
 	}
+	local result = castfn(context)
 	if result ~= false then
 		minetest.sound_play(sorcery.data.spells[spell].sound or "default_item_smoke", { --FIXME make own sounds
 			pos = user:get_pos();
 			gain = 0.8;
@@ -217,9 +291,10 @@
 		-- 		aspect_w = 16, aspect_h = 16;
 		-- 		length = 0.6;
 		-- 	}
 		-- }
-		stack:add_wear(sorcery.wands.util.wear(stack))
+		local fac = matprops and matprops.sturdiness or 1
+		stack:add_wear((sorcery.wands.util.wear(stack) / fac) * context.wearmult)
 	end
 	return stack
 end