Fiend Artisan 220 (Ikoria: Lair of Behemoths)

This creature gets +1/+1 for each creature card in your graveyard. {X}{B/G}, {T}, Sacrifice another creature: Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle. Activate only as a sorcery.

NM - $8.50
LP - $6.80
MP - $5.10
HP - $3.40
DMG - $2.20