Attack with Hoard Robber.
Hoard Robber triggers on combat damage to a player, creating three Treasure tokens, three Food tokens, and three Clue tokens.
Activate Time Sieve's ability by tapping Time Sieve and sacrificing five artifacts you control, taking an extra turn after this one.
Repeat.

Infinite turns

Lock

Hoard Robber

Time Sieve

Academy Manufactor

Glasspool Mimic // Glasspool Shore

Attack with Hoard Robber.
Hoard Robber triggers on combat damage to a player, creating two Treasure tokens, two Food tokens, and two Clue tokens.
Activate Time Sieve's ability by tapping Time Sieve and sacrificing five artifacts you control, taking an extra turn after this one.
Repeat.

Anointed Procession

At the beginning of your combat step, Helm of the Host triggers, creating a token copy of Academy Manufactor.
Attack with Hoard Robber.
Hoard Robber triggers on combat damage to a player, creating three Treasure tokens, three Food tokens, and three Clue tokens.
Activate Time Sieve's ability by tapping Time Sieve and sacrificing five artifacts you control, taking an extra turn after this one.
Repeat.

Helm of the Host

Adrix and Nev, Twincasters

Cast Academy Manufactor for {3}.
Holding priority, cast Double Major for {U}{G} targeting Academy Manufactor, copying the spell.
Allow the copy and the original to resolve.
Move to your combat step.
Attack with Hoard Robber.
Hoard Robber triggers on combat damage to a player, creating three Treasure tokens, three Food tokens, and three Clue tokens.
Activate Time Sieve's ability by tapping Time Sieve and sacrificing five artifacts you control, taking an extra turn after this one.
Repeat from step 5.

Combos with "Hoard Robber"