Optimus Prime, Hero // Optimus Prime, Autobot Leader, Luminous Broodmoth, and Sarcatog

Prerequisites

• Optimus Prime, Hero // Optimus Prime, Autobot Leader on the battlefield
• Luminous Broodmoth on the battlefield
• Sarcatog on the battlefield
• It is your turn

Steps

1. Activate Sarcatog's second ability by sacrificing Optimus Prime, Hero
2. When Optimus Prime, Hero dies, its second ability triggers, returning it from your graveyard to the battlefield as Optimus Prime, Autobot Leader
3. Activate Sarcatog's second ability by sacrificing Optimus Prime, Autobot Leader
4. When Optimus Prime, Autobot Leader dies, Luminous Broodmoth triggers, returning Optimus Prime from your graveyard to the battlefield as Optimus Prime, Hero with a flying counter on it
5. Resolve both Sarcatog abilities from steps 1 and 3, giving it +2/+2 until end of turn
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinitely large Sarcatog until end of turn