Activate Viscera Seer by sacrificing Archon of Falling Stars.
When Archon of Falling Stars dies, it triggers, returning Animate Dead from your graveyard to the battlefield.
When Animate Dead enters the battlefield, it triggers, returning Archon of Falling Stars from your graveyard to the battlefield, and attaching Animate Dead to it.
Resolve the Viscera Seer ability, causing you to scry 1.
Repeat.
This clever loop turns the graveyard into a revolving door by creating a continuous cycle of resurrection and sacrifice. You start by using Viscera Seer to sacrifice Archon of Falling Stars, sending the Archon back to the graveyard. That death triggers the Archon's own ability to fish Animate Dead out of your graveyard, and as Animate Dead enters the battlefield, its trigger drags the Archon right back down with it while attaching itself. Because Viscera Seer's sacrifice ability is at instant speed, you can repeat this dance an arbitrary number of times to endlessly scry through your deck while generating boundless triggers.