Spymaster's Vault is a land from Modern Horizons 3 that enters untapped if you control a Swamp and taps for
If the target creature is an illegal target when Enter the Enigma tries to resolve, it won't resolve and none of its effects will happen
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It obviously is planning on finding the exact fatty you want to recur but it does have potential to be a good utility card in combination with a things like Deep Analysis or Jace, Vryn's Prodigy
