+Polymorphist (3)
, , Sacrifice another creature: Reveal cards from the top of your library until you reveal a nonlegendary creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.
When Obscura Polymorphist enters the battlefield, exile target creature. Its controller seeks a creature card.
Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1.
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