Teshar, Ancestor's Apostle, Glint Hawk, and Phantom Train

Prerequisites

• Teshar, Ancestor's Apostle on the battlefield
• Glint Hawk in the graveyard
• Phantom Train on the battlefield

Steps

1. Cast an artifact in your hand by paying
2. Teshar triggers, returning Glint Hawk from your graveyard to the battlefield
3. When Glint Hawk 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 Phantom Train by sacrificing Glint Hawk
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Infinite +1/+1 counters on a creature