Mikaeus, the Unhallowed, Luminous Broodmoth, and Myr Scrapling

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Luminous Broodmoth on the battlefield
• Myr Scrapling on the battlefield

Steps

1. Activate Myr Scrapling by sacrificing it
2. When Myr Scrapling dies, Mikaeus triggers, returning Myr Scrapling from your graveyard to the battlefield with a +1/+1 counter on it
3. Resolve the Myr Scrapling ability Activate Myr Scrapling by sacrificing it
4. When Myr Scrapling dies, Luminous Broodmoth triggers, returning Myr Scrapling from your graveyard to the battlefield with a flying counter on it
5. Resolve the Myr Scrapling ability Repeat

Results

• Infinite +1/+1 counters on creatures you control
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers