Cast Sharuum either from your hand or from the command zone by paying 3 plus commander tax if applicable.
When Sharuum enters the battlefield, it triggers, targeting Technomancer.
Holding priority, activate Viscera Seer by sacrificing Sharuum.
Resolve the Sharuum trigger, returning Technomancer from your graveyard to the battlefield.
When Technomancer enters the battlefield, it triggers.
Holding priority, activate Viscera Seer by sacrificing Technomancer.
Resolve the Technomancer trigger, causing you to mill three cards and return Sharuum from your graveyard to the battlefield.
Repeat from step 2.
This elegant resurrection loop relies on a continuous mutual reanimation cycle between Sharuum the Hegemon and Technomancer, fueled by Viscera Seer to clear each creature from the battlefield in response to its own entry trigger. When Sharuum enters, its ability targets Technomancer in the graveyard, but you immediately sacrifice Sharuum to the Seer; the ensuing Technomancer trigger then mills cards and returns Sharuum right back to the battlefield to target Technomancer once more. Because Technomancer's total mana value of 6 easily falls within its own revival threshold, this back-and-forth exchange generates infinite sacrifice, death, and entry triggers while letting you sift through your entire library via Viscera Seer's scry ability.