Silvar, Devourer of the Free is a mythic Legendary Creature — Cat Nightmare card from Commander 2020 (C20), collector number 15. Current market price: $1.05 (foil $0.42), TCGplayer market prices via Scryfall.
Partner with Trynn, Champion of Freedom (When this creature enters, target player may put Trynn into their hand from their library, then shuffle.) Menace Sacrifice a Human: Put a +1/+1 counter on Silvar. It gains indestructible until end of turn.