Soldevi Adnate, Nim Deathmantle, and Sparring Mummy

Prerequisites

• Soldevi Adnate on the battlefield
• Nim Deathmantle on the battlefield
• Sparring Mummy on the battlefield
• Soldevi Adnate does not have summoning sickness
• Nim Deathmantle attached to Sparring Mummy

Steps

1. Activate Soldevi Adnate by tapping it and sacrificing Sparring Mummy, adding an amount of equal to Sparring Mummy's mana value
2. When Sparring Mummy dies, Nim Deathmantle triggers, causing you to pay to return Sparring Mummy from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. When Sparring Mummy enters the battlefield, it triggers, untapping Soldevi Adnate
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers