Chromium, the Mutable [Core Set 2019 Prerelease Promos] Tyranid Swarm Set: Gym Challenge Unlimited Type:

Set: Gym Challenge Unlimited Type: Lightning Rarity: Common

Set: Diamond & Pearl: Black Star Promos Type: Fighting Rarity: Black Star Promo Retreat cost: Colorless

When you control no lands

Set: World Championships 2015 Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

Set: Gym Heroes Unlimited Type: Water Rarity: Rare Retreat cost: Colorless

Chromium, the Mutable [Core Set 2019 Prerelease Promos] Tyranid Swarm Set: Gym Challenge Unlimited Type:Set: Core Set 2019 Prerelease Promos Type: Legendary Creature Elder Dragon Rarity: Mythic Cost: {4}{W}{U}{B} Flash This spell can't be countered. Flying Discard a card: Until end of turn, Chromium, the Mutable becomes a Human with base power and toughness 1 1, loses all abilities, and gains hexproof. It can't be blocked this turn.