Hoard Robber + Time Sieve + Academy Manufactor + Mirrorhall Mimic

Hoard Robber
Time Sieve
Academy Manufactor
Mirrorhall Mimic

Requires
Hoard Robber must be on the battlefield. Time Sieve must be on the battlefield. Academy Manufactor must be on the battlefield. Mirrorhall Mimic // Ghastly Mimicry must be on the battlefield. Mirrorhall Mimic // Ghastly Mimicry is a copy of Academy Manufactor. Hoard Robber does not have summoning sickness and cannot be blocked by at least one opponent.
Steps
  1. Attack with Hoard Robber.
  2. Hoard Robber triggers on combat damage to a player, creating three Treasure tokens, three Food tokens, and three Clue tokens.
  3. Activate Time Sieve's ability by tapping Time Sieve and sacrificing five artifacts you control, taking an extra turn after this one.
  4. Repeat.
Results
Infinite turns.