Saffi Eriksdotter, Phantom Train, and Sister Hospitaller

Prerequisites

• Saffi Eriksdotter on the battlefield
• Phantom Train on the battlefield
• Sister Hospitaller in hand

Steps

1. Activate Saffi by sacrificing it, targeting Sister Hospitaller Activate Phantom Train by sacrificing Sister Hospitaller When Sister Hospitaller dies, Saffi triggers, returning Sister Hospitaller from your graveyard to the battlefield
2. When Sister Hospitaller enters, it triggers, returning Saffi from your graveyard to the battlefield and causing you to gain 2 life
3. Resolve the Phantom Train ability
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite death triggers
• Infinite lifegain triggers
• Infinite lifegain
• Infinite +1/+1 counters on a creature