Stalwart Successor, Thermopod, and Obstinate Gargoyle

Prerequisites

• Stalwart Successor on the battlefield
• Thermopod on the battlefield
• Obstinate Gargoyle on the battlefield

Steps

1. Activate Thermopod by sacrificing Obstinate Gargoyle When Obstinate Gargoyle dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
2. When Obstinate Gargoyle enters, Stalwart Successor triggers, putting a +1/+1 counter on Obstinate Gargoyle Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite red mana
• Infinite sacrifice triggers