Nim Deathmantle, Ashnod's Altar, and Maulfist Squad

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Maulfist Squad on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Maulfist Squad, adding
2. When Maulfist Squad dies, Nim Deathmantle triggers, causing you to pay to return Maulfist Squad from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. When Maulfist Squad enters the battlefield, its fabricate ability triggers, creating a 1/1 Servo artifact creature token
4. Activate Ashnod's Altar by sacrificing the Servo, adding
5. Repeat

Results

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