You get to put +1/+1 counters and draw cards equal to the number of permanent types of cards in your graveyard when Korvold deals combat damage to a player
It has some synergies with mana rocks - which I honestly felt there were almost too many of in the deck and subsequently cut down a little - but barely anything else in the list
Beyond the historic cards, we have a handful of basic effects with cycling stapled on as a way to keep churning through our deck if need be
His +1 is a draw, his -2 creates a creature (with flying and lifelink no less) and his -7 probably wins you the game
Smellerbee, Rebel Fighter Smellerbee, Rebel Fighter accelerates aggro decks with substantial card draw
Romana II Marcy: If you could get some sort of engine going on this, I feel like there's a way to probably break what this is doing, especially if you could do it with something like treasure tokens