Thran Vigil + Thunderblust + Yahenni, Undying Partisan

Thran Vigil

Thunderblust

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Thunderblust.
2. When Thunderblust 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 Thunderblust.
4. Resolve the Yahenni ability.
5. Repeat.