Polukranos, World Eater (THS) from Theros, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Johann Bodin
• Card Text:
  {X}{X}{G}: Monstrosity X. (If this creature isn’t monstrous, put X +1/+1 counters on it and it becomes monstrous.)
  When Polukranos, World Eater becomes monstrous, it deals X damage divided as you choose among any number of target creatures your opponents control. Each of those creatures deals damage equal to its power to Polukranos.