Community
Carnival // Carnage
Instant // Sorcery
Carnival deals 1 damage to target creature or planeswalker and 1 damage to that permanent's controller.
//
Carnage deals 3 damage to target opponent. That player discards two cards.
Rulings (9)
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.
Dec 8, 2022
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.
Dec 8, 2022
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.
Dec 8, 2022
Legality
Formats by platform
