Chromium, the Mutable [Core Set 2019 Prerelease Promos] Darksteel and you decide whether to

and you decide whether to flip again

(Then put Timetwister into its owner's graveyard

Set: From the Vault: Dragons Type: Sorcery Rarity: Rare Cost: {8}{R} Search your library for a Dragon permanent card

Chains of leaping fire and sizzling lightning laid waste the artificers' handiwork

Chromium, the Mutable [Core Set 2019 Prerelease Promos] Darksteel and you decide whether toSet: 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.