Yarus, Roar of the Old Gods + Master of the Veil + Yahenni, Undying Partisan

Yarus, Roar of the Old Gods

Master of the Veil

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Master of the Veil.
2. When Master of the Veil dies, Yarus' second ability triggers, returning Master of the Veil from your graveyard to the battlefield face down, then turning it face up.
3. Master of the Veil triggers, turning itself face down.
4. Resolve the Yahenni ability, giving it indestructible until end of turn.
5. Repeat.

This clever loop centers around the resurrection engine provided by Yarus, Roar of the Old Gods, which immediately catches Master of the Veil as it dies and returns it to the battlefield face down before turning it face up. That turning process triggers Master of the Veil's own ability, allowing you to target itself and turn it right back face down, setting up the loop to repeat indefinitely. Meanwhile, Yahenni, Undying Partisan acts as the willing executioner for this cycle, sacrificing Master of the Veil to fuel its own sacrifice triggers while granting itself indestructible to stay protected.