Lavabelly Sliver is a uncommon Creature — Sliver card from Modern Horizons 1 Timeshifts (H1R), collector number 29. Current market price: — (foil $0.63), TCGplayer market prices via Scryfall.
Sliver creatures you control have "When this creature enters, it deals 1 damage to target player or planeswalker and you gain 1 life."