Arcane Adaptation
Enchantment
As this enchantment enters, 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.
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.
フォーマット
スタンダード : 不可パイオニア : 可能モダン : 可能レガシー : 可能ヴィンテージ : 可能パウパー : 不可統率者戦 : 可能デジタル専用フォーマット
アルケミー : 不可エクスプローラー : 可能ヒストリック : 可能タイムレス : 可能
カード裁定
2017/09/29
原文Replacement effects that modify creatures of a certain type as they enter the battlefield will apply after you apply Arcane Adaptation's effect. This is a change from previous rules. If you control Arcane Adaptation and the Aether Revolt card Metallic Mimic, with the same creature type chosen for both, then any creature you control will enter the battlefield with an additional +1/+1 counter on it.
2018/01/19
原文To choose a creature type, you must choose an existing creature type, such as Vampire or Knight. You can't choose multiple creature types, such as "Vampire Knight." Card types such as artifact can't be chosen, nor can subtypes that aren't creature types, such as Jace, Vehicle, or Treasure.
data from gatherer