Steam Vents (RTR) from Return to Ravnica, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Yeong-Hao Han
• Card Text:
  (T: Add U or R to your mana pool.)
  As Steam Vents enters the battlefield, you may pay 2 life. If you don't, Steam Vents enters the battlefield tapped.