Vizier of Remedies + Kithkin Spellduster + Yahenni, Undying Partisan

Vizier of Remedies

Kithkin Spellduster

Yahenni, Undying Partisan

How it works

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

This clever loop turns Yahenni, Undying Partisan into an absolute engine by feeding it a creature that refuses to stay in the graveyard. When you sacrifice Kithkin Spellduster to Yahenni's activation, its persist ability naturally tries to return it with a -1/-1 counter, but Vizier of Remedies steps in to completely mitigate that drawback by reducing the counter placement to zero. Because the Spellduster returns to the battlefield cleanly without any counters, its persist trigger will just keep working every single time it dies, letting you loop the sacrifice indefinitely.