Gerrard, Weatherlight Hero, Cauldron of Souls, Extruder, and Woe Strider

Prerequisites

• Gerrard, Weatherlight Hero on the battlefield
• Cauldron of Souls on the battlefield
• Extruder on the battlefield
• Woe Strider on the battlefield
• Gerrard has no more than one -1/-1 counter on it

Steps

1. Activate Cauldron of Souls by tapping it, giving Gerrard persist until end of turn
2. Activate Extruder by sacrificing Cauldron of Souls, putting a +1/+1 counter on Gerrard
3. Activate Woe Strider by sacrificing Gerrard
4. When Gerrard dies, it and its persist ability trigger
5. Resolve the Gerrard persist trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it
6. 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
7. Resolve the Woe Strider ability from step 3, causing you to scry 1
8. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite scry 1