Plangent Stash

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When Plangent Stash enters, create a treasure token.

Whenever a creature you control leaves the battlefield, put a stash counter on Plangent Stash.

{b/g},{t}: Return Plangent Stash to your hand.You
may cast the exiled card without paying its mana cost. Activate only if there are three or more stash counters on Plangent Stash.