Fatal Push is a uncommon Instant card from Assassin's Creed (ACR), collector number 90. Current market price: $0.58 (foil $0.67), TCGplayer market prices via Scryfall.
Destroy target creature if it has mana value 2 or less. Revolt — Destroy that creature if it has mana value 4 or less instead if a permanent left the battlefield under your control this turn.