Guan Yu, Sainted Warrior, Remembrance, Deathrender, and Thermopod

Prerequisites

• Guan Yu, Sainted Warrior on the battlefield
• Remembrance on the battlefield
• Deathrender on the battlefield
• Thermopod on the battlefield
• All permanents on the battlefield
• Deathrender attached to Guan Yu

Steps

1. Activate Thermopod's second ability by sacrificing Guan Yu, adding
2. When Guan Yu dies, it, Deathrender and Remembrance trigger
3. Resolve the Guan Yu trigger, causing you to shuffle it into your library from your graveyard
4. Resolve the Remembrance trigger, causing you to search your library for Guan Yu and put it into your hand
5. Resolve the Deathrender trigger, putting Guan Yu from your hand onto the battlefield, and attaching Deathrender to it
6. Repeat

Results

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