Thran Vigil + Safehold Elite + Yahenni, Undying Partisan

Thran Vigil

Safehold Elite

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Safehold Elite.
2. When Safehold Elite dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Thran Vigil triggers, putting a +1/+1 counter on Safehold Elite.
4. Resolve the Yahenni ability.
5. Repeat.