Road

While not on the stack, the characteristics of a split card are the combination of its two halves. For example, Road /// Ruin is a green and red card, it is both an instant card and a sorcery card, and its mana value is 6.

Each split card is a single card. For example, if you discard one, you've discarded one card, not two. If an effect counts the number of instant and sorcery cards in your graveyard, Road /// Ruin counts once, not twice.

Once you've started to cast a spell with aftermath from your graveyard, the card is immediately moved to the stack. Opponents can't try to stop the ability by exiling the card with another effect.