Activate Viscera Seer by sacrificing Shambling Ghast.
When Shambling Ghast dies, it and Enduring Renewal trigger.
Resolve the Enduring Renewal trigger, returning Shambling Ghast from your graveyard to your hand.
Resolve the Shambling Ghast trigger, creating a Treasure artifact token.
Resolve the Viscera Seer ability from step 1, causing you to scry 1.
Activate the Treasure by tapping and sacrificing it, adding .
Cast Shambling Ghast by paying .
Repeat.
This clever loop turns a humble common and a rare enchantment into an endless engine of sacrifice and resurrection. With **Enduring Renewal** sitting on the battlefield to constantly bounce creatures straight back to your hand when they die, **Shambling Ghast** becomes completely immortal under Viscera Seer's watchful eye. Every time you feed the Ghast to **Viscera Seer**, **Enduring Renewal** triggers to return it to your hand, while the Ghast itself leaves behind a Treasure token to fund its own immediate recast. The result is a perpetual motion machine that filters through your deck with infinite scrys while generating endless sacrifice triggers and storm count.