Shilgengar, Sire of Famine, Faceless Butcher, and Karmic Guide

Prerequisites

• Shilgengar, Sire of Famine on the battlefield
• Faceless Butcher in hand
• Karmic Guide on the battlefield
• available

Steps

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

Results

• Infinite artifact tokens
• Infinite Blood tokens
• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite creature sacrifice triggers