Geode Golem (C18) from Commander 2018, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Yeong-Hao Han
• Card Text:
  Trample
  Whenever Geode Golem deals combat damage to a player, you may cast your commander from the command zone without paying its mana cost. (You still pay any additional costs.)