Éomer, Marshal of Rohan + Altaïr Ibn-La'Ahad + Umbral Collar Zealot + Leyline of Transformation

Éomer, Marshal of Rohan

Altaïr Ibn-La'Ahad

Umbral Collar Zealot

Leyline of Transformation

How it works

1. Declare Altaïr as an attacker. Altaïr triggers, exiling Éomer from your graveyard with a memory counter on it, and then creating a tapped and attacking token copy of each card you own that is exiled with a memory counter on it.
2. Activate Umbral Collar Zealot by sacrificing another legendary creature token except Éomer.
3. When the creature dies, Éomer triggers, untapping all creatures you control and causing you to get an additional combat phase after this one.
4. Resolve the Umbral Collar Zealot ability.
5. Repeat during each combat phase.

This clever sequence turns Altaïr Ibn-La'Ahad into an engine for infinite combat phases by leveraging the graveyard and some clever type-reshaping. Leyline of Transformation plays a crucial quiet role here, ensuring your creature cards have the right types to seamlessly synergize, while Umbral Collar Zealot provides the necessary sacrifice outlet to fuel the loop. When Altaïr attacks, he resurrects Éomer, Marshal of Rohan as a tapped and attacking token copy from your graveyard; sacrificing a spare token to the Zealot triggers Éomer's ability to untap your board and grant you an additional combat phase. By repeating this process across endless combat steps, you generate infinite death triggers, sacrifice loops, and surveillance.