Mikaeus, the Unhallowed, Cinderhaze Wretch, and Carrion Feeder

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Cinderhaze Wretch on the battlefield
• Carrion Feeder on the battlefield

Steps

1. Activate Carrion Feeder by sacrificing Cinderhaze Wretch
2. Cinderhaze Wretch dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it
3. Resolve the Carrion Feeder ability, putting a +1/+1 counter on it
4. Activate Cinderhaze Wretch's second ability by putting a -1/-1 counter on it, untapping it
5. Repeat

Results

• Infinite +1/+1 counters on Carrion Feeder
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers