Road // Ruin

If you cast the first half of a split card with aftermath during your turn, you'll have priority immediately after it resolves. You can cast the half with aftermath from your graveyard before any player can take any other action if it's legal for you to do so.

All split cards have two card faces on a single card, and you put a split card onto the stack with only the half you're casting. The characteristics of the half you didn't cast are ignored while the spell is on the stack. For example, if an effect prevents you from casting red spells, you can cast Road, but not Ruin.

If another effect allows you to cast a split card with aftermath from a graveyard, you may cast either half. If you cast the half that has aftermath, you'll exile the card if it would leave the stack.