Endless Cockroaches, Deathrender, and Carrion Feeder

Prerequisites

• Endless Cockroaches on the battlefield
• Deathrender on the battlefield
• Carrion Feeder on the battlefield
• Deathrender attached to Endless Cockroaches

Steps

1. Activate Carrion Feeder by sacrificing Endless Cockroaches
2. Endless Cockroaches dies, triggering itself and Deathrender
3. Resolve the Endless Cockroaches trigger, returning it from your graveyard to your hand
4. Resolve the Deathrender trigger, putting Endless Cockroaches onto the battlefield from your hand, and attaching Deathrender to it
5. Resolve the Carrion Feeder ability from step 1, putting a +1/+1 counter on it
6. Repeat

Results

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