Metalwork Colossus + Warren Soultrader + Aetherflux Reservoir + Exalted Sunborn

Metalwork Colossus

Warren Soultrader

Aetherflux Reservoir

Exalted Sunborn

How it works

1. Cast Metalwork Colossus by paying 0.
2. Aetherflux Reservoir triggers, causing you to gain 1 life for each spell you've cast this turn.
3. Activate Warren Soultrader by paying 1 life and sacrificing Metalwork Colossus, creating two Treasure tokens.
4. Activate Metalwork Colossus by sacrificing the Treasures, returning Metalwork Colossus from your graveyard to your hand.
5. Repeat.
6. Once you have infinite life, you may activate Aetherflux Reservoir infinitely to deal infinite damage to any target(s).

This looping engine transforms the high mana value of Metalwork Colossus—which allows it to be cast for free when you have enough noncreature artifacts—into an infinite storm and life-gaining machine. Warren Soultrader provides the vital sacrifice outlet to turn that free casting into Treasure tokens, a process supercharged by Exalted Sunborn doubling your token production to easily generate a net surplus of mana and life. As you continuously cast and sacrifice your colossus, Aetherflux Reservoir tracks every single spell cast to rapidly escalate your life total until you can simply pay 50 life to obliterate your opponents.