Teshar, Ancestor's Apostle + Aether Channeler + Mana Crypt + Carrion Feeder

Teshar, Ancestor's Apostle

Aether Channeler

Mana Crypt

Carrion Feeder

How it works

1. Activate Carrion Feeder by sacrificing Aether Channeler, putting a +1/+1 counter on it.
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 triggers, returning Mana Crypt from the battlefield to your hand.
6. Activate Carrion Feeder by sacrificing Aether Channeler, putting a +1/+1 counter on it.
7. Cast Mana Crypt by paying 0.
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.

This vintage loop turns the legendary flyers and artifact mana of the format into an endless engine centered around Teshar, Ancestor's Apostle and its historic trigger. By casting a cheap artifact like Mana Crypt—which also provides the raw mana to fund your spells—you trigger Teshar to continually pull Aether Channeler out of your graveyard. Each time Aether Channeler enters the battlefield, its versatility shines as it bounces your mana sources right back to your hand to be recast, while Carrion Feeder conveniently sacrifices Aether Channeler to clear the board and grow infinitely large.