Arcane Adaptation [Ixalan Prerelease Promos] Beatdown Box Set if All Hallow's Eve is

if All Hallow's Eve is exiled with a scream counter on it

−2: Search your library for a card

there is an additional combat phase followed by an additional main phase

thereby ensuring their rapid growth

Return target permanent to its owner's hand

Arcane Adaptation [Ixalan Prerelease Promos] Beatdown Box Set if All Hallow's Eve isSet: Ixalan Prerelease Promos Type: Enchantment Rarity: Rare Cost: {2}{U} As Arcane Adaptation enters the battlefield, choose a creature type. Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.