Polis Crusher is a rare Creature — Cyclops card from Theros (THS), collector number 198. Current market price: $0.14 (foil $0.25), TCGplayer market prices via Scryfall.
Trample, protection from enchantments {4}{R}{G}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) Whenever this creature deals combat damage to a player, if this creature is monstrous, destroy target enchantment that player controls.