Saffi Eriksdotter, Lurrus of the Dream-Den, Earthcraft, and Phantom Train

Prerequisites

• Saffi Eriksdotter on the battlefield
• Lurrus of the Dream-Den on the battlefield
• Earthcraft on the battlefield
• Phantom Train on the battlefield

Steps

1. Activate a basic Forest and Plains by tapping them, adding
2. Activate Earthcraft twice by tapping Lurrus and Saffi, untapping the basic Forest and Plains
3. Activate Saffi by sacrificing it, targeting Lurrus
4. Activate Phantom Train by sacrificing Lurrus
5. When Lurrus dies, Saffi triggers, returning Lurrus from your graveyard to the battlefield
6. Resolve the Phantom Train ability Cast Saffi from your graveyard by paying
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Infinite +1/+1 counters on a creature