I attempted to delete 1 of my other Digimon using this card's 1st [All Turns] effect when this card would leave the battle area other than in battle, but I couldn't delete that Digimon due to another effect. Does this card leave the battle area at such times?
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Official Ruling
Yes, it leaves the battle area. If the "by doing X" condition isn't met, the rest of the effect isn't processed. In such cases, this card leaves the battle area if the deletion isn't possible.