unit attacks trigger

ok im making a map that involves a ton of triggers and i need help with


event-unit attacks

condition-triggering unit is equal too _________

action- cast spell at 100%



i know iv seen this in the first wm map but it was wiped from my comp could someone tell me where this event and action is located thx in advance

ok does any one have an open maul any where i dont have any i just need to find this trigger if not ill ask missing tooltip

help me plz

generic unit event, a unit attacks
unit == whatever
unit - order unit to do [baseability] targeting unit/point/no target