Drag to the Roots

Unconditional removal that hits anything short of a land has long been priced at a premium: Vindicate wanted three specific colors, Utter End cost four, Anguished Unmaking asks for three life. This one sells the same effect at four mana with no life cost and no restriction on what dies, then hands you a rebate for playing the deck it wants to live in. Fill your graveyard with four card types and it collapses to a two-mana instant that destroys any nonland permanent, a rate that would be a design problem if it came without setup. The setup is the tension the card resolves. Golgari graveyard decks already churn through creatures, instants, sorceries, artifacts, enchantments, and lands as a matter of course, so delirium arrives as a natural byproduct rather than a hoop to jump through: the removal spell rewards the engine you were building anyway. Cast early it is a fair, slightly overcosted answer; cast once the yard is stocked it is one of the cheapest catch-all destroy effects a fair deck can run, and it stays live against permanents that dodge more targeted removal. The whole design is a bet that a grindy midrange deck will reliably reach four types by the mid-game, and that the payoff for doing so should be efficiency on an effect that normally has to be paid for in color, life, or mana.