Melira, Sylvok Outcast + Gravelgill Axeshark + Yahenni, Undying Partisan

Melira, Sylvok Outcast

Gravelgill Axeshark

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Gravelgill Axeshark.
2. When Gravelgill Axeshark dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Melira.
3. Resolve the Yahenni ability
4. Repeat.

This loop turns Yahenni, Undying Partisan into an endlessly hungry sacrifice outlet by exploiting a clever interaction with persist. When you sacrifice Gravelgill Axeshark to Yahenni, its persist ability normally brings it back with a -1/-1 counter, but Melira, Sylvok Outcast's static ability completely prevents those counters from being placed on your creatures. Because Gravelgill Axeshark returns entirely clean every time, you can repeat this cycle infinitely to generate boundless sacrifice, entry, and death triggers.