Plague Boiler (RAV) from Ravnica: City of Guilds, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Mark Tedin
• Card Text:
  At the beginning of your upkeep, put a plague counter on Plague Boiler.
  1BG: Put a plague counter on Plague Boiler or remove a plague counter from it.
  When Plague Boiler has three or more plague counters on it, sacrifice it. If you do, destroy all nonland permanents.