Eternal Scourge + Ashnod's Altar + Unscythe, Killer of Kings + Marauding Raptor

Eternal Scourge

Ashnod's Altar

Unscythe, Killer of Kings

Marauding Raptor

How it works

1. Cast Eternal Scourge either from your hand or from exile by paying 2.
2. When Eternal Scourge enters the battlefield, Marauding Raptor triggers, dealing 2 damage to Eternal Scourge.
3. Activate Ashnod's Altar by sacrificing Eternal Scourge, adding CC.
4. When Eternal Scourge dies, Unscythe triggers, exiling Eternal Scourge and creating a 2/2 Zombie creature token.
5. When the Zombie enters the battlefield, Marauding Raptor triggers.
6. Holding priority, activate Ashnod's Altar by sacrificing the Zombie, adding CC.
7. When the Zombie dies, Unscythe triggers, failing to exile the Zombie as it no longer exists.
8. Resolve the Marauding Raptor trigger, doing nothing as the Zombie is no longer on the battlefield.
9. Repeat.

This ingenious loop centers around the clever self-recycling nature of Eternal Scourge, which can be cast directly out of exile once it gets tucked away. Ashnod's Altar acts as your engine, funding the process by converting sacrifices into colorless mana while Unscythe, Killer of Kings provides the exile trigger needed to keep the Scourge accessible. Meanwhile, Marauding Raptor happily shoots the incoming creatures, and though its damage to the Scourge normally pushes it to the graveyard, Unscythe steps in to whisk it back to exile—ready to be recast over and over again for a completely closed loop of mana and triggers.