Nim Deathmantle, Ashnod's Altar, and Accomplished Automaton

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Accomplished Automaton on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Accomplished Automaton, adding
2. When Accomplished Automaton dies, Nim Deathmantle triggers, causing you to pay to return Accomplished Automaton from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. When Accomplished Automaton 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