[Solved] Make a spell DRAIN nearby unit HP as well as Mana.

Level 17
Feb 9, 2008
Alright, I'm making an AoS for my friends, and my girlfriend. We all have our own (balanced) heroes with unique spells. My girlfriend wants to have a toggable (on/off) aura that drains nearby unit HP (in the area of effect/radius), while draining her own mana at the same time.

Exactly how would I do this? Since the spell editor doesn't let me use negative values (and makes my life less easy).