Galio's Q
305 base damage +105% AP scaling +9% of the target's max HP at 825 range, A very large effective area, travel through all units-- with no penalty for hitting multiple targets, on a 6 second cooldown.
Along with two abilities that can keep an enemy in the tornado for the short 1.5 second duration.
It may suggest Rod and Abyssal, but if you buy Morellonomicon, that means at rank 5 your Q has: 305 +105 +104 (using Talon's base health at level 9 for reference-- picked a mid laner Galio should be at the disadvantage against, since he's AD)
=514 damage on a 4.8s cooldown, with 1070 mana.
And that's without factoring in any masteries or runes.
Rito, his skins look fucking awesome. You didn't need to break him to convince me to buy one.