Dross Scorpion, Detective's Satchel, and Yahenni, Undying Partisan

Prerequisites

• Dross Scorpion on the battlefield
• Detective's Satchel on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Detective's Satchel by tapping it, creating a 1/1 Thopter artifact creature token
2. Activate Yahenni by sacrificing the Thopter
3. When the Thopter dies, Dross Scorpion triggers, untapping Detective's Satchel
4. Resolve the Yahenni ability
5. Repeat

Results

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