Boom // Bust

Each split card has two names. If an effect instructs you to choose a card name, you may choose one of those names, but not both.

If you copy a spell that's half of a split card, the copy copies that same half. For example, if you copy Assault, the copy is also Assault, not Battery.

If an effect allows you to cast a spell with certain characteristics, consider only the characteristics of the half you're casting. For example, if an effect allows you to cast a sorcery spell with mana value 2 or less from among cards in your graveyard, you could cast Assault this way, but not Battery.

If one of Boom's targets becomes an illegal target, the other is still destroyed.