Instant - Trap, 6RR (8) If an opponent had two or more lands enter the battlefield under his or her control this turn, you may pay {3}{R}{R} rather than pay Lavaball Trap's mana cost.
Destroy two target lands. Lavaball Trap deals 4 damage to each creature.
Illus. Zoltan Boros & Gabor Szikszai
10/1/2009: You may ignore a Trap's alternative cost condition and simply cast it for its normal mana cost. This is true even if its alternative cost condition has been met.
10/1/2009: Casting a Trap by paying its alternative cost doesn't change its mana cost or converted mana cost. The only difference is the cost you actually pay.
10/1/2009: Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay.
10/1/2009: You may target any two lands, not just ones that entered the battlefield this turn.
10/1/2009: All creatures are dealt damage, not just ones controlled by the targeted lands' controller(s).
10/1/2009: If both targeted lands are illegal targets by the time Lavaball Trap resolves, the entire spell is countered. No creatures are dealt damage.
Zendikar
(Rare)