A state that changes a basic attack into a hp absorb attack

 I have a state called bloodlust and a skill called bloodlust. The skill adds the state to the character (self only).

 While the state is in effect, the character's normal attack is supposed to heal him/her for 1/5 of the damage dealt.

 ... so I tried to change the attack formula but I can't get it quite right.

c = (a.atk * a.mdf) - b.def; a.state?(100)? c && a.hp = a.hp + c/5: c

 instead of healing the character, it changes 2 damage to 55 damage (which is her max hp)

Not sure if you're opposed to using scripts, but this one works amazingly well:

http://yanflychannel.wordpress.com/rmvxa/gameplay-scripts/convert-damage/

cool, I set it up and it works like a charm :p

quick question though... the HP and MP drain skills, do they just return the full value?

yes. by default drain skills return full value