Aurelia, the Warleader + Seluma, Light of Aysen + Ashnod's Altar

Aurelia, the Warleader

Seluma, Light of Aysen

Ashnod's Altar

How it works

1. Declare Aurelia and Seluma as attackers. Aurelia triggers, causing you to untap all creatures you control and to get an additional combat phase after this one.
2. Activate Ashnod's Altar by sacrificing Aurelia.
3. Deal combat damage using Seluma. Seluma triggers, returning Aurelia from your graveyard to the battlefield.
4. Repeat.

This clever loop relies on Aurelia, the Warleader to continuously grant additional combat phases and untap your creatures, while Seluma, Light of Aysen leverages its combat damage trigger to resurrect Aurelia directly from the graveyard. Ashnod's Altar acts as the engine that sends Aurelia back to the graveyard while supplying a steady stream of colorless mana along the way. Because Aurelia's attack trigger and Seluma's combat damage trigger reset every single iteration, you can infinitely cycle through combat steps, sacrifices, and re-entries.