Time Bomb (5ED) from Fifth Edition, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: George Pratt
• Card Text:
  During your upkeep, put a time counter on Time Bomb.
  1, T, Sacrifice Time Bomb: Time Bomb deals to each creature and player an amount of damage equal to the number of time counters on Time Bomb.