Why don't you try some spellvamp, <3
Akali, Kat, other ap champions. o_O"
Life steal: Xin Zhao, Ashe, all AD's O_O"
I'm pretty sure vlad and fiddles are the only champs that use actual skills to heal themselves. OH, you can try Tryndamere, every kill gives him 1 point, crit gives him 2 points. Maximum stacks is 8, and will heal you a decent amount.