1 Oct 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.
1 Oct 2009
You may target any two lands, not just ones that entered this turn.
1 Oct 2009
If both targeted lands are illegal targets by the time Lavaball Trap resolves, the entire spell doesn't resolve. No creatures are dealt damage.
1 Oct 2009
Casting a Trap by paying its alternative cost doesn't change its mana cost or mana value. The only difference is the cost you actually pay.
1 Oct 2009
Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay.
1 Oct 2009
All creatures are dealt damage, not just ones controlled by the targeted lands' controller(s).