Melira, Sylvok Outcast, Thermopod, and Heartmender

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Thermopod on the battlefield
• Heartmender on the battlefield

Steps

1. Activate Thermopod by sacrificing Heartmender
2. When Heartmender dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Melira
3. Repeat

Results

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