Meytr, Mother of Fingers

Whenever you cast a spell, put a Fingerprint
counter on Meytr, then create a 1/1 colorless Fingercrawler creature token for each Fingerprint
counter on Meytr.

{3}{c}{c}: Counter up to X target spells and/or abilities, then Meytr deals X damage to each other
creature and each opponent, where X is equal to the number of Fingerprint counters on it. Then remove
all Fingerprint counters from Meytr.