Howl of the Horde
Sorcery
Raid — If you attacked this turn, when you next cast an instant or sorcery spell this turn, copy that spell an additional time. You may choose new targets for the copy.
Legal in
Pioneer, Modern, Legacy, Vintage, Commander, Brawl, Historic
Rulings (8)
If the spell being copied is modal (that is, it says "Choose one —" or the like), each copy will have the same mode. You can't choose a different one.
2014-09-20
Howl of the Horde creates a delayed triggered ability that triggers when you cast your next instant or sorcery spell that turn. The raid ability creates a second, identical delayed triggered ability. Each of these will create a single copy of the next instant or sorcery spell you cast during that turn. If you don't cast another instant or sorcery spell during that turn, both delayed triggered abilities will cease to exist.
2014-09-20
If the spell being copied has an X whose value was determined as it was cast (like Crater's Claws has), each copy will have the same value of X.
2014-09-20
When either ability resolves, it creates a copy of the instant or sorcery spell. You control each copy. Each 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 or copies will then resolve like normal spells, after players get a chance to cast spells and activate abilities.
2014-09-20