Thermopod, Fiend Hunter, and Karmic Guide

Prerequisites

• Thermopod on the battlefield
• Fiend Hunter in hand
• Karmic Guide on the battlefield
• available

Steps

1. Cast Fiend Hunter by paying its mana cost
2. When Fiend Hunter enters, its first ability triggers, exiling Karmic Guide
3. Activate Thermopod by sacrificing Fiend Hunter
4. When Fiend Hunter dies, its second ability triggers, returning Karmic Guide from exile to the battlefield
5. When Karmic Guide enters, it triggers, returning Fiend Hunter from your graveyard to the battlefield
6. When Fiend Hunter enters, its first ability triggers, exiling Karmic Guide
7. Repeat from step 3

Results

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