Activate Altar of Dementia by sacrificing Shield Sphere.
Activate Salvager of Ruin by sacrificing it, returning Shield Sphere from your graveyard to your hand.
Cast Shield Sphere by paying 0.
Teshar triggers, returning Salvager of Ruin from your graveyard to the battlefield.
Repeat.
This clever loop turns the unassuming **Shield Sphere** into a zero-mana engine that fuels **Teshar, Ancestor's Apostle**, triggering its historical resurrection ability whenever the Sphere is recast. While the **Altar of Dementia** mercilessly mills away your opponent's library through repeated sacrifices, **Salvager of Ruin** ensures a closed feedback loop by cycling the Sphere right back to your hand each iteration. Together, this synergy lets you sacrifice and replay the **Shield Sphere** indefinitely, leveraging **Teshar, Ancestor's Apostle** to continuously pull **Salvager of Ruin** back from the grave for endless triggers.