Saffi Eriksdotter, General Leo Cristophe, and Bloodflow Connoisseur

Prerequisites

• Saffi Eriksdotter on the battlefield
• General Leo Cristophe on the battlefield
• Bloodflow Connoisseur on the battlefield

Steps

1. Activate Saffi by sacrificing it, targeting General Leo Cristophe
2. Activate Bloodflow Connoisseur by sacrificing General Leo Cristophe
3. When General Leo Cristophe dies, Saffi triggers, returning General Leo Cristophe from your graveyard to the battlefield
4. When General Leo Cristophe enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield
5. Resolve the Bloodflow Connoisseur ability
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters on Bloodflow Connoisseur