Why heal everyone else? Keep all that health for yourself!

Support Kassadin.

Grab that new Black cleaver, a wit's end, and a few other choice attack speed items, and watch that minion wave crumble at your knees. Just don't expect that malphite charging at you to do the same thing.

Attack Damage Orianna.

On-hit Orianna would work a bit better, but I guess they would have a fun time trying to get out of your autoattack range...also, the bonus magic damage is useful.

AP Garen, DFG is banned.

Gunblade, WoTA, Void Staff, Evil Tome

You heal amazingly, your ult is like 30 sec cooldown and you get ALL the MPen.
Why not?

ADC Rumble.

His base damages are quite high anyway, so building AD won't hinder you. Nice CC to keep them from running away. Sheen/Triforce included.

AP Kha'Zix.

W damage OP. Plus, get a dfg and become the next Evelynn.

AP Mid Sona

Self-contained sustain and untargeted harass mean Sona eventually wins her lane.

Jungledinger.

Who needs a leash? let the turrets to all the work.

AP Wukong

Tank Annie