Chromium, the Mutable [Core Set 2019 Prerelease Promos] Mountain Forest Citizens are free to do

Citizens are free to do as they wish

copy it for each spell cast before it this turn

then shuffle your library and put that card on top of it

When Ulamog

he is a master of trickery and misdirection

Chromium, the Mutable [Core Set 2019 Prerelease Promos] Mountain Forest Citizens are free to doSet: 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.