Korvold, Gleeful Glutton is a mythic Legendary Creature — Dragon Noble card from Wilds of Eldraine Commander (WOC), collector number 38. Current market price: $1.12 (foil $1.38), TCGplayer market prices via Scryfall.
This spell costs {1} less to cast for each card type among permanents you've sacrificed this turn. Flying, trample, haste Whenever Korvold deals combat damage to a player, put X +1/+1 counters on Korvold and draw X cards, where X is the number of permanent types among cards in your graveyard.