> and < are different

game/modules/tome/data/talents/spells/necrosis.lua

@@ -60,7 +60,7 @@ newTalent{
 	cooldown = 25,
 	tactical = { ATTACK = { ARCANE = 3 }, DISABLE = 2 },
 	rnd_boss_restrict = function(self, t)
-		return self.level < 15
+		return self.level > 15
 	end,
 	range = 7,
 	requires_target = true,