@@ -403,8 +403,13 @@
 	-- perform leyline checks and call notify if necessary
 	if minetest.get_item_group(node.name, 'sorcery_ley_device') ~= 0 then
 		sorcery.lib.node.notifyneighbors(pos)
 	end
+
+	-- is there an active disjunction in effect here?
+	-- if so, return immediately and perform no magic
+	local probe = sorcery.spell.probe(pos)
+	if probe.disjunction then return end
 
 	-- we're goint to do something VERY evil here and
 	-- replace the air with a "glow-air" that removes
 	-- itself after a short period of time, to create