Trying to find a forgotten feat

[Hazrond]

I dont remember where i saw it but wasnt there a feat that said negative energy healed you for full, and positive still healed you for half? im asking because i had a silly thought with combining that and Shadow Sun Ninja to Infiniheal himself when not directly punching others with magical fists of harming :smallbiggrin:

[Thiyr]

Tomb tainted soul, out of libris mortis iirc, does that

Edit: missed the positive energy bit. Don't remember if it does that.