SC2Mapster

Update: Patch 1.5 is now live on most regions. You can check out the official patch notes here or read Blizzard's "Guide to the Arcade" here!

I believe this is worth mentioning, our friends over at MMO-Champion have found the WoW HotS CE pet.

Arena of Battle Trolls by TrollSC2

This game is a quake-like free for all frag fest. You simply choose your troll and eliminate your opponents using various weapons and ammunition picked up during epic battles. The first who reaches the frag limit wins.