ゴブリンの闇住まい
クリーチャー — ゴブリン
威迫
ゴブリンの闇住まいが戦場に出たとき、あなたの墓地から点数で見たマナ・コストが３以下でインスタントかソーサリーであるカード１枚を対象とする。あなたはそれをそのマナ・コストを支払うことなく唱えてもよい。このターン、そのカードがあなたの墓地に置かれるなら、代わりにそれを追放する。
イラスト：
Commander 2020#153レア日本語適正
裁定
You cast the card during the resolution of the enters-the-battlefield ability, not later in the turn. If it’s a sorcery card, ignore the timing restrictions based on it being a sorcery card. Other timing restrictions, such as “Cast [this card] only during combat,” must be followed.
If you can’t cast the target instant or sorcery card, perhaps because there are no legal targets available, or if you choose not to cast it, it will remain in your graveyard.
If you cast a card “without paying its mana cost,” you can’t pay alternative costs such as surge costs. You can pay additional costs. If the card has mandatory additional costs, you must pay those.
If the instant or sorcery card has 
in its mana cost, you must choose 0 as its value.
If an instant or sorcery card you cast this way is countered, it will be exiled.
If an instant or sorcery card you cast this way goes to a zone other than exile or a graveyard, perhaps because one of its abilities says to put it into its owner’s hand, it won’t be exiled. This is true even if the card would be put into a graveyard later that turn.