Cephalid Coliseum (Foil) (V12) from From the Vault: Realms, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Foil
• Artist: Cliff Childs
• Card Text:
  T: Add U to your mana pool. Cephalid Coliseum deals 1 damage to you.
  Threshold — U, T, Sacrifice Cephalid Coliseum: Target player draws three cards, then discards three cards. Activate this ability only if seven or more cards are in your graveyard.