Polygoyf

Trample, myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) Polygoyf's power is equal to the number of card types among cards in all graveyards and

its toughness is equal to that number plus 1.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms661xo302tqpq01ildho1be.