Teshar, Ancestor's Apostle + Blasting Station + Stickytongue Sentinel

Teshar, Ancestor's Apostle

Blasting Station

Stickytongue Sentinel

How it works

1. Cast an artifact in your hand by paying 0.
2. Teshar triggers, returning Stickytongue Sentinel from your graveyard to the battlefield.
3. When Stickytongue Sentinel enters, it and Blasting Station trigger.
4. Resolve the Stickytongue Sentinel trigger, returning another artifact that can be cast for 0 from the battlefield to your hand.
5. Resolve the Blasting Station trigger, untapping it.
6. Resolve the artifact spell cast in step 1.
7. Activate Blasting Station by tapping it and sacrificing Stickytongue Sentinel
8. Repeat.

This loop creates an endless cycle of artifact casting and sacrifice fueled by the synergy between Teshar, Ancestor's Apostle and Blasting Station. Each time you cast a zero-mana artifact, Teshar triggers to bring Stickytongue Sentinel back from the graveyard, whose entry trigger bounces that same artifact back to your hand for reuse. Meanwhile, Blasting Station's untap ability triggers off the Sentinel entering, allowing you to sacrifice the Sentinel to deal 1 damage and instantly untap, ready to repeat the process.