Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Dog Cat Phantom Flock enters the battlefield

Phantom Flock enters the battlefield with three +1/+1 counters on it

then discard a card face up

it gets +X/+X until end of turn

and the thongs lashed and curled about Gandalf's knees

create a 1/1 white Cat creature token

Cloud Key (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Dog Cat Phantom Flock enters the battlefieldSet: The Brothers' War Retro Artifacts Type: Artifact Rarity: Rare Cost: {3} As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery. Spells you cast of the chosen type cost {1} less to cast. "A key only unlocks a door. Its wielder must choose whether to cross the threshold." *Hurkyl's Metaphysics, vol. II*