Legal in
Modern, Legacy, Vintage, Penny, Commander, Oathbreaker
Rulings (8)
If one of Boom's targets becomes an illegal target, the other is still destroyed.
2021-03-19
Each split card is a single card. For example, if you discard a split card, you've discarded one card, not two. If an effect counts the number of sorcery cards in your graveyard, Assault // Battery counts once, not twice.
2022-12-08
Split cards have two card faces on a single card. The characteristics of the half you didn't cast are ignored while the spell is on the stack.
2022-12-08
A split card's characteristics are a combination of its two halves while it is not on the stack. For example, Assault // Battery has a mana value of 5 while it is in your library. If an effect allows you to search your library for a card with mana value 4 or less, you can't find Assault // Battery.
2022-12-08