Rupture Spire (CON) from Conflux, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Jaime Jones
• Card Text:
  Rupture Spire comes into play tapped.
  When Rupture Spire comes into play, sacrifice it unless you pay 1.
  T: Add one mana of any color to your mana pool.