Lavaball Trap is a rare Instant — Trap card from Zendikar (ZEN), collector number 135. Current market price: $0.33 (foil $1.24), TCGplayer market prices via Scryfall.
If an opponent had two or more lands enter the battlefield under their control this turn, you may pay {3}{R}{R} rather than pay this spell's mana cost. Destroy two target lands. Lavaball Trap deals 4 damage to each creature.