Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- Gerrard has no more than one -1/-1 counter on it.
Steps
- Activate Cauldron of Souls by tapping it, giving Gerrard persist until end of turn.
- Activate Extruder by sacrificing Cauldron of Souls, putting a +1/+1 counter on Gerrard.
- Activate Umbral Collar Zealot by sacrificing Gerrard.
- When Gerrard dies, it and its persist ability trigger.
- Resolve the Gerrard persist trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- Resolve the second Gerrard trigger, failing to exile it as it has left your graveyard, and returning Cauldron of Souls from your graveyard to the battlefield.
- Resolve the Umbral Collar Zealot ability from step 3, putting a +1/+1 counter on it.
- Repeat.
Results
- Infinite LTB.
- Infinite ETB.
- Infinite sacrifice triggers.
- Infinite death triggers.
- Infinite surveil.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).