Turn // Burn

Some split cards with fuse have two monocolor halves of different colors. If such a card is cast as a fused split spell, the resulting spell is multicolored. If only one half is cast, the spell is the color of that half. While not on the stack, such a card is multicolored.

If a player names a card, the player may name either half of a split card, but not both. A split card has the chosen name if one of its two names matches the chosen name.

If the affected creature gains an ability after Turn resolves, it will keep that ability.

To cast a fused split spell, pay both of its mana costs. While the spell is on the stack, its mana value is the total amount of mana in both costs.

On the stack, a split spell that hasn't been fused has only that half's characteristics and mana value. The other half is treated as though it didn't exist.

Turn doesn't counter abilities that have already triggered or been activated. In particular, there is no way to cast this to stop a creature's "At the beginning of your upkeep" or "When this creature enters the battlefield" abilities from triggering.