This lethal loop relies on Stuffy Doll’s unique passive ability to reflect any damage it takes directly onto the chosen player, turning self-inflicted harm into direct attacks. By aiming Fire Covenant's flexible damage-dealing prowess straight at your own indestructible construct, you can pay a massive amount of life as an additional cost to fuel the spell. The resulting cascade of damage triggers Stuffy Doll right back at your opponent, closing out the game in a single fiery burst.