Mikaeus, the Unhallowed, Otherworldly Escort, and Bloodflow Connoisseur

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Otherworldly Escort on the battlefield
• Bloodflow Connoisseur on the battlefield

Steps

1. Activate Bloodflow Connoisseur by sacrificing Otherworldly Escort
2. When Otherworldly Escort dies, it triggers, returning itself from your graveyard to the battlefield as a Spirit Detective
3. Resolve the Bloodflow Connoisseur ability
4. Activate Bloodflow Connoisseur by sacrificing Otherworldly Escort
5. When Otherworldly Escort dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it
6. Resolve the Bloodflow Connoisseur ability
7. Repeat

Results

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