Haakon, Stromgald Scourge + Morophon, the Boundless + Nameless Inversion + Jet Medallion

Haakon, Stromgald Scourge

Morophon, the Boundless

Nameless Inversion

Jet Medallion

How it works

1. Cast Nameless Inversion from your graveyard, as it is a Knight card, by paying 0 due to Jet Medallion and Morophon, giving a creature +3/-3 until end of turn.
2. If the creature has toughness 0 or less, the creature dies as a state-based action.
3. Repeat as desired.

This cunning engine transforms your graveyard into an inexhaustible execution chamber by taking advantage of shared creature types. Because Nameless Inversion and Morophon, the Boundless both possess changeling, Nameless Inversion counts as a Knight card, allowing Haakon, Stromgald Scourge to pull it straight out of your graveyard time and time again. To make this loop truly free to cast, Jet Medallion shaves off the generic mana while Morophon completely erases the colored mana requirements. The result is a repeating torrent of lethal debuffs that can continuously whittle away at opposing boards without ever costing you a single drop of mana.