Spymaster's Vault - Borderless (MH3) from Modern Horizons 3, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Hector Ortiz
• Card Text:
  Spymaster's Vault enters the battlefield tapped unless you control a Swamp.
  T: Add B.
  B, T: Target creature you control connives X, where X is the number of creatures that died this turn.