Saffi Eriksdotter, Sister Hospitaller, and Warren Soultrader

Prerequisites

• Saffi Eriksdotter on the battlefield
• Sister Hospitaller on the battlefield
• Warren Soultrader on the battlefield

Steps

1. Activate Saffi by sacrificing it, targeting Sister Hospitaller
2. Activate Warren Soultrader by paying 1 life and sacrificing Sister Hospitaller
3. When Sister Hospitaller dies, Saffi triggers, returning Sister Hospitaller from your graveyard to the battlefield
4. When Sister Hospitaller enters, it triggers, returning Saffi from your graveyard to the battlefield and causing you to gain 2 life
5. Resolve the Warren Soultrader ability, creating a Treasure token,
6. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite Treasure tokens
• Infinite colored mana
• Infinite death triggers
• Infinite lifegain
• Infinite lifegain triggers
• Infinite sacrifice triggers