Soldevi Adnate, Nim Deathmantle, and Sky Hussar

Prerequisites

• Soldevi Adnate on the battlefield
• Nim Deathmantle on the battlefield
• Sky Hussar on the battlefield
• Soldevi Adnate does not have summoning sickness
• Nim Deathmantle attached to Sky Hussar

Steps

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

Results

• Infinite black mana
• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce