Stomping Slabs is a uncommon Sorcery card from Morningtide (MOR), collector number 107. Current market price: $0.15 (foil $0.32), TCGplayer market prices via Scryfall.
Reveal the top seven cards of your library, then put those cards on the bottom of your library in any order. If a card named Stomping Slabs was revealed this way, Stomping Slabs deals 7 damage to any target.