Saffi Eriksdotter, Sister Hospitaller, and Hammerhead, Maggia Boss

Prerequisites

• Saffi Eriksdotter on the battlefield
• Sister Hospitaller on the battlefield
• Hammerhead, Maggia Boss on the battlefield

Steps

1. Activate Saffi by sacrificing it, targeting Sister Hospitaller Activate Hammerhead 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
3. Resolve the Hammerhead ability
4. Repeat

Results

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