, Exile Geistblast from your graveyard: Copy target instant or sorcery spell you control. You may choose new targets for the copy.
4/8/2016 Geistblast’s ability can copy any instant or sorcery spell, not just one with targets.
4/8/2016 When Geistblast’s ability resolves, it creates a copy of the instant or sorcery spell. The copy is created on the stack, so it’s not “cast.” Abilities that trigger when a player casts a spell won’t trigger. The copy will then resolve like a normal spell, before the original spell resolves but after players get a chance to cast spells and activate abilities.
4/8/2016 The copy will have the same targets as the spell it’s copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. If, for one of the targets, you can’t choose a new legal target, then it remains unchanged (even if the current target is illegal).
4/8/2016 If the spell being copied is modal (that is, it says “Choose one —” or the like), the copy will have the same mode. You can’t choose a different one.
4/8/2016 If the spell being copied has an X whose value was determined as it was cast (like Avacyn’s Judgment’s madness cost has), the copy will have the same value of X.
4/8/2016 If the spell has damage divided as it was cast (also like Avacyn’s Judgment), the division can’t be changed (although the targets receiving that damage still can).
4/8/2016 If an alternative cost was paid for the spell, such as its madness cost or surge cost, the same alternative cost is considered to have been paid for the copy.