Nick Valentine, Private Eye, Stridehangar Automaton, and Yahenni, Undying Partisan

Prerequisites

• Nick Valentine, Private Eye on the battlefield
• Stridehangar Automaton on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Yahenni by sacrificing another artifact creature
2. When the creature dies, Nick Valentine triggers, creating a Clue token and a 1/1 Thopter artifact creature token
3. Resolve the Yahenni ability
4. Repeat

Results

• Infinite artifact tokens
• Infinite creature LTB
• Infinite creature ETB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite Clue tokens