Havi, the All-Father + Gerrard, Weatherlight Hero + Umbral Collar Zealot

Havi, the All-Father

Gerrard, Weatherlight Hero

Umbral Collar Zealot

How it works

1. Activate Umbral Collar Zealot by sacrificing Gerrard.
2. When Gerrard dies, it and Havi trigger.
3. Resolve the Havi trigger, returning up to one legendary creature card with mana value 3 or less from your graveyard to the battlefield.
4. Holding priority, activate Umbral Collar Zealot by sacrificing Havi.
5. When Havi dies, it triggers, returning Gerrard from your graveyard to the battlefield.
6. Resolve the Gerrard trigger from step 2, failing to exile it as it is no longer in your graveyard and returning Havi from your graveyard to the battlefield.
7. Resolve the Umbral Collar Zealot abilities from step 1 and 4.
8. Repeat.