Hellkite Tyrant (GTC) from Gatecrash, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Aleksi Briclot
• Card Text:
  Flying, trample
  Whenever Hellkite Tyrant deals combat damage to a player, gain control of all artifacts that player controls.
  At the beginning of your upkeep, if you control twenty or more artifacts, you win the game.