Chromium, the Mutable [Core Set 2019 Prerelease Promos]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.

Set: Black & White: Base Set Type: Water Rarity: Promo Retreat cost: Colorless

• 1 Oblivion Stone

Coin may vary by product

Set: EX: Holon Phantoms Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

Set: HeartGold & SoulSilver: Undaunted Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

Add a tremendous

whoever you are—soldier or scientist

Action - Discard 2 cards with yellow color strips: Destroy Great Library of Solana

Set: EX: Legend Maker Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

Set: Sun & Moon: Base Set Type: Colorless Rarity: Promo Retreat cost: Colorless

a Planeswalker Deck or a Brawl Deck)

Set: EX: Sandstorm Type: Water Rarity: Ultra Rare Retreat cost: Colorless