Saffi Eriksdotter, Shilgengar, Sire of Famine, and Karmic Guide

Prerequisites

• Saffi Eriksdotter on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Karmic Guide in hand

Steps

1. Activate Saffi by sacrificing it, targeting Karmic Guide Activate Shilgengar by sacrificing Karmic Guide When Karmic Guide dies, Saffi triggers, returning Karmic Guide from your graveyard to the battlefield
2. When Karmic Guide enters, it triggers, returning Saffi from your graveyard to the battlefield
3. Resolve the Shilgengar ability
4. Repeat

Results

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