Chromium, the Mutable [Core Set 2019 Prerelease Promos] Rare At the beginning of the

At the beginning of the end step

{T}: Each player gains control of all creatures they own

Set: Beta Edition Type: Artifact Creature — Wall Rarity: Uncommon Cost: {4} Defender (This creature can't attack

Set: The Dark Type: Artifact Rarity: Uncommon Cost: {0} {T}

It can't be regenerated

Chromium, the Mutable [Core Set 2019 Prerelease Promos] Rare At the beginning of theSet: 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.