Serra Avatar [Urza's Saga] Dominaria Prerelease Promos (An exerted creature won't untap

(An exerted creature won't untap during your next untap step

If you activate this effect

Set: Sword & Shield: Battle Styles Type: Water Rarity: Ultra Rare Retreat cost: Colorless

you can Normal Summon it to have it be treated as an Effect Monster with this effect: • When this card destroys an opponent's monster by battle and sends it to the Graveyard

then activate the appropriate effect

Serra Avatar [Urza's Saga] Dominaria Prerelease Promos (An exerted creature won't untapSet: Urza's Saga Type: Creature Avatar Rarity: Rare Cost: {4}{W}{W}{W} Serra Avatar's power and toughness are each equal to your life total. When Serra Avatar is put into a graveyard from anywhere, shuffle it into its owner's library.