See Double [March of the Machine] Token // Token Creature Set: Secret Lair: Universes Within

Set: Secret Lair: Universes Within Type: Legendary Enchantment Creature — Horror Rarity: Mythic Cost: {4}{B}{B}{B} Arvinox

The chill wind extinguishes flame

If this spell's prowl cost was paid

Whenever a player plays a card exiled with Prowl

See Double [March of the Machine] Token // Token Creature Set: Secret Lair: Universes WithinSet: March of the Machine Type: Instant Rarity: Rare Cost: {2}{U}{U} This spell can't be copied. Choose one. If an opponent has eight or more cards in their graveyard, you may choose both. Copy target spell. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.) Create a token that's a copy of target creature.