Teshar, Ancestor's Apostle + Aether Channeler + Mana Crypt + Blasting Station

Teshar, Ancestor's Apostle

Aether Channeler

Mana Crypt

Blasting Station

How it works

1. Activate Blasting Station by tapping it and sacrificing Aether Channeler, dealing 1 damage to any target.
2. Activate Mana Crypt by tapping it, adding CC.
3. Cast the other artifact with MV<=2 by paying at most 2.
4. Teshar triggers, returning Aether Channeler from your graveyard to the battlefield.
5. When Aether Channeler enters the battlefield, it and Blasting Station trigger.
6. Resolve the Blasting Station trigger, untapping it.
7. Resolve the Aether Channeler trigger, returning Mana Crypt from the battlefield to your hand.
8. Activate Blasting Station by tapping it and sacrificing Aether Channeler, dealing 1 damage to any target.
9. Cast Mana Crypt by paying 0.
10. Teshar triggers, returning Aether Channeler from your graveyard to the battlefield.
11. When Aether Channeler enters the battlefield, it and Blasting Station trigger.
12. Resolve the Blasting Station trigger, untapping it.
13. Resolve the Aether Channeler trigger, returning the other artifact from the battlefield to your hand.
14. Repeat.