As Protean War Engine enters the battlefield, draft a card from Protean War Engine's spellbook and exile it. Whenever Protean War Engine becomes crewed, until end of turn, it becomes a copy of the exiled card, except it's a Vehicle artifact in addition to its other types. Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.) Protean War Engine's spellbook includes the following cards: • Serra Angel • Resplendent Angel • Steel-Plume Marshal • Duelcraft Trainer • Falconer Adept • Seraph of Dawn • Star-Crowned Stag • Benalish Marshal • Serra Paragon • Blade Historian • Captivating Crew • Manaform Hellkite • Moonveil Regent • Skyship Stalker • Ogre Battledriver