Can Moonfall retarget a battlefield after Evelynn moves units away?

Question

Player A controls battlefield 1 with a unit and a facedown Evelynn, and battlefield 2 with a violet Pyke. On Player B's turn, they move Diana onto battlefield 2 and cast Moonfall targeting battlefield 2 without moving an enemy unit. Player A reveals Evelynn in response and moves Diana to battlefield 1. Can Player B choose battlefield 2 as Moonfall's target after Evelynn resolves?

Anonyme · Accepted Answer

No. Battlefield 2 was chosen when Moonfall was finalized, and you cannot select a new target at resolution. Moonfall resolves with no effect because battlefield 2 is no longer a legal target. Note that Evelynn's facedown ability can only be used on its controller's turn.

Can Moonfall retarget a battlefield after Evelynn moves units away?

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