Whenever Kayn deals damage to a player, put a Darkin counter on Kayn. Whenever Kayn deals damage to a creature, put a Shadow counter on Kayn.
When Kayn has five of either counter, sacrifice Kayn, then choose one:
• Search your library for a card named Raast, reveal it, and put it onto the battlefield.
• Search your library for a card named Kayn, Shadow Assassin, reveal it, and put it onto the battlefield.
“The child is gone. The killer remains.”