Solemnity, Luminous Broodmoth, and Ravenous Rotbelly

Prerequisites

• Solemnity on the battlefield
• Luminous Broodmoth on the battlefield
• Ravenous Rotbelly in hand
• available

Steps

1. Cast Ravenous Rotbelly by paying
2. When Ravenous Rotbelly enters, it triggers, causing you to sacrifice it and up to two additional Zombies
3. When you sacrifice Ravenous Rotbelly, its reflexive triggered ability and Luminous Broodmoth trigger
4. Resolve Ravenous Rotbelly's trigger, causing each opponent to sacrifice a number of creatures equal to the number you sacrificed
5. Resolve Luminous Broodmoth's trigger, returning Ravenous Rotbelly from your graveyard to the battlefield without a flying counter on it due to Solemnity
6. Repeat from step 2

Results

• Each opponent sacrifices all creatures they control
• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite creature sacrifice triggers