Teshar, Ancestor's Apostle, Aether Channeler, Mana Vault, and Viscera Seer

Prerequisites

• Teshar, Ancestor's Apostle on the battlefield
• Aether Channeler on the battlefield
• Mana Vault on the battlefield
• Viscera Seer on the battlefield

Steps

1. Activate Viscera Seer by sacrificing Aether Channeler, causing you to scry 1
2. Activate Mana Vault by tapping it, adding
3. Cast the other artifact with MV<=2 by paying at most
4. Teshar triggers, returning Aether Channeler from your graveyard to the battlefield
5. When Aether Channeler enters the battlefield, it triggers, returning Mana Vault from the battlefield to your hand
6. Activate Viscera Seer by sacrificing Aether Channeler, causing you to scry 1
7. Cast Mana Vault by paying
8. Teshar triggers, returning Aether Channeler from your graveyard to the battlefield
9. When Aether Channeler enters the battlefield, it triggers, returning the other artifact from the battlefield to your hand
10. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite scry 1
• Infinite storm count