I was thinking Ahri's Charm. For obvious reasons :P
i don't think her disable lasts long enough to really do anything with it --- LoL/XBL/Steam/Everything: TryHarderNubz http://i.imgur.com/1hsMf.jpg http://i.imgur.com/z5JK0.jpg http://i.imgur.com/fsLxu.jpg
Because being able to rewind time would be... Excellent.
Just make millions off your ult :)
On the note of Zilean, His passive, 'Heightened Learning' would make you pretty damn smart which could also result in huge amounts of money :) --- Apple>Nintendo>Steam>Playstation>Google>Microsoft>Origin Own: Wii, DS, iPod Touch, Computer