Umbral Collar Zealot, Wormfang Drake, and Karmic Guide

Prerequisites

• Umbral Collar Zealot on the battlefield
• Wormfang Drake in hand
• Karmic Guide on the battlefield
• available

Steps

1. Cast Wormfang Drake by paying its mana cost
2. When Wormfang Drake enters, its first ability triggers, exiling Karmic Guide
3. Activate Umbral Collar Zealot by sacrificing Wormfang Drake
4. When Wormfang Drake dies, its second ability triggers, returning Karmic Guide from exile to the battlefield
5. When Karmic Guide enters, it triggers, returning Wormfang Drake from your graveyard to the battlefield
6. When Wormfang Drake enters, its first ability triggers, exiling Karmic Guide
7. Resolve the Umbral Collar Zealot ability
8. Repeat from step 3

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite surveil