Teshar, Ancestor's Apostle + Sol Ring + Scrap Trawler + Megatog

Teshar, Ancestor's Apostle

Sol Ring

Scrap Trawler

Megatog

How it works

1. Cast Sol Ring by paying 1.
2. Teshar triggers, returning Scrap Trawler from your graveyard to the battlefield.
3. Activate Sol Ring by tapping it, adding CC.
4. Activate Megatog by sacrificing Sol Ring.
5. When Sol Ring leaves the battlefield, Scrap Trawler triggers, returning any mana value 0 artifact from your graveyard to the battlefield.
6. Resolve the Megatog ability.
7. Activate Megatog by sacrificing Scrap Trawler.
8. When Scrap Trawler dies, it triggers, returning Sol Ring from your graveyard to the battlefield.
9. Resolve the Megatog ability.
10. Repeat.