Korvold, Gleeful Glutton

The original Korvold, Fae-Cursed King paid you off for each individual sacrifice: one trigger, one counter, one card, resolving on the stack every time a permanent died. This version rewrites that engine around permanent types instead of raw sacrifice count, and the shift is not cosmetic. The cost reduction reads the types among permanents you have sacrificed this turn, so a single turn that ditches a creature, an artifact, a land, and an enchantment can strip four mana off the front of the spell before you ever pay for its body. The combat trigger runs on a related but distinct currency: it reads the permanent types among cards in your graveyard, then scales both the counters and the draw off that diversity. The gap between those two clauses is where the deckbuilding tension lives. Sacrificing a Treasure or a creature token helps the cost reduction the turn you do it, but tokens cease to exist the moment they hit the graveyard, so they contribute nothing to the combat payoff. The trigger rewards real cards of many types sitting in the yard: a dead creature, a milled artifact, a fetched-away land, a discarded enchantment. Flying, trample, and haste let the Dragon swing the turn it arrives and pressure blockers, and turn a connect into a burst refill sized not by how many things you have killed, but by how varied the cardboard in your graveyard has become.