Remembrance + Deathrender + Arashin Sovereign + Yahenni, Undying Partisan

Remembrance

Deathrender

Arashin Sovereign

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Arashin Sovereign.
2. When Arashin Sovereign dies, it, Deathrender and Remembrance trigger.
3. Resolve the Arashin Sovereign trigger, causing you to put it on top of your library from your graveyard.
4. Resolve the Remembrance trigger, causing you to search your library for Arashin Sovereign and put it into your hand.
5. Resolve the Deathrender trigger, putting Arashin Sovereign from your hand onto the battlefield, and attaching Deathrender to it.
6. Resolve the Yahenni ability, giving it indestructible until end of turn.
7. Repeat.

This loop transforms your graveyard into a revolving door of avian royalty, fueled entirely by the clever synergy between Deathrender and Remembrance. When you feed Arashin Sovereign to Yahenni, Undying Partisan's sacrifice ability, Deathrender triggers to yank the Sovereign right back out of your hand and onto the battlefield, simultaneously ensuring Yahenni stays safe by granting it indestructible. Meanwhile, Remembrance takes advantage of the Sovereign's demise to fetch another copy from your library to keep your hand fully stocked for the next iteration.