Teshar, Ancestor's Apostle, Yahenni, Undying Partisan, and Nurturing Pixie

Prerequisites

• Teshar, Ancestor's Apostle on the battlefield
• Yahenni, Undying Partisan on the battlefield
• Nurturing Pixie in the graveyard

Steps

1. Cast an artifact in your hand by paying
2. Teshar triggers, returning Nurturing Pixie from your graveyard to the battlefield
3. When Nurturing Pixie enters, it triggers, returning another artifact that can be cast for from the battlefield to your hand
4. Resolve the artifact spell cast in step 1
5. Activate Yahenni by sacrificing Nurturing Pixie Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite storm count