Endless Cockroaches, Deathrender, and Ashnod's Altar

Prerequisites

• Endless Cockroaches on the battlefield
• Deathrender on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Endless Cockroaches, adidng
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. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers