Mikaeus, the Unhallowed, Luminous Broodmoth, and Bloodflow Connoisseur

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Luminous Broodmoth on the battlefield
• Bloodflow Connoisseur on the battlefield
• undefined

Steps

1. Activate Bloodflow Connoisseur by sacrificing it
2. When Bloodflow Connoisseur dies, its undying ability triggers if it didn't have a +1/+1 counter, and Luminous Broodmoth triggers if Bloodflow Connoisseur didn't have flying
3. Resolve the undying trigger, if applicable, returning Bloodflow Connoisseur from your graveyard to the battlefield with a +1/+1 counter on it
4. Resolve the Luminous Broodmoth trigger, if applicable, returning Bloodflow Connoisseur from your graveyard to the battlefield with a flying counter on it if Bloodflow Connoisseur is still in your graveyard
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