The amount of damage dealt is based on the first target creature’s power as Fall of the Hammer resolves.
01-02-2014
wotc
As Fall of the Hammer tries to resolve, if only one of the targets is legal, Fall of the Hammer will still resolve but will have no effect: If the first target creature is illegal, it can’t deal damage to anything. If the second target creature is illegal, it can’t be dealt damage.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.