Get item when NPC kills another

[Dibalamin]

You'll need a player.pl using the sub EVENT_CAST to check for all your heal spells, give you a global variable and then send a signal to the OTHER mob (the dying one) that will check all possible targets in range, reward the item to the PC that has the global variable upon his death, then clear the variable.

You can also use the sub EVENT_CAST_ON I believe.