Casting Cost: 

Target opponent puts the top thirteen cards of his or her library into his or her graveyard.

: Put Startled Awake from your graveyard onto the battlefield transformed. Activate this ability only any time you could cast a sorcery.

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Skulk (This creature can't be blocked by creatures with greater power.)

When Persistent Nightmare deals combat damage to a player, return it to its owner's hand.