Olivia, Mobilized for War, Umbral Collar Zealot, and Doom Weaver

Prerequisites

• Olivia, Mobilized for War on the battlefield
• Umbral Collar Zealot on the battlefield
• Doom Weaver on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing the persist creature
2. When the persist creature dies, it triggers twice, once from its persist ability and once from the ability granted to it by Doom Weaver
3. Resolve the first trigger, causing you to draw a card
4. Resolve the persist trigger, returning the creature from your graveyard to the battlefield with a -1/-1 counter on it
5. When the persist creature enters the battlefield, Olivia and Doom Weaver's soulbond ability trigger
6. Resolve the Olivia trigger, putting a +1/+1 counter on the persist creature and causing you to discard a card
7. Resolve the Doom Weaver trigger, pairing it and the persist creature
8. Resolve the Umbral Collar Zealot ability
9. Repeat

Results

• Infinite self-discard triggers
• Near-infinite ETB
• Infinite draw triggers
• Infinite looting
• Near-infinite LTB
• Near-infinite death triggers
• Near infinite sacrifice triggers
• Near-infinite surveil 1