Tromokratis (BNG) from Born of the Gods, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Matt Stewart
• Card Text:
  Tromokratis has hexproof unless it's attacking or blocking.
  Tromokratis can't be blocked unless all creatures defending player controls block it. (If any creature that player controls doesn't block this creature, it can't be blocked.)