Foundation Breaker is a uncommon Creature — Elemental card from Lorwyn Eclipsed Commander (ECC), collector number 108. Current market price: $0.30, TCGplayer market prices via Scryfall.
When this creature enters, you may destroy target artifact or enchantment. Evoke {1}{G} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)