World of Warcraft: Base game up to level 90 (comes with a month sub) and a mount+pet. (OR) Two glittery mounts.
Diablo: Base game and a $10 bill.
Starcraft II: Heart of the Swarm, Wings of Liberty, and a $10 bill.
Heroes of the Storm: 5 to 10 totally distinct playable heroes, or skins with new animations, sounds, and spell effects.
Hearthstone: Blackrock Mountain and Naxxaramas single-player adventures + cards. (OR) Packs for a total of 200 new cards.
(OR) 5 portraits which you can mimic by taping a picture of Magni to your computer and speaking in a Scottish accent.
Who in Hell thought ten bucks was an acceptable price for a hero reskin?