Grim Giganotosaurus

(5) (B) (G)

(10)(B)(G): Monstrosity 10. This ability costs (1) less to activate for each creature with power 4 or greater your opponents control. (If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.)
When Grim Giganotosaurus becomes monstrous, destroy all artifacts and creatures other than Grim Giganotosaurus.

10/10

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