Hoard Robber + Time Sieve + Academy Manufactor + Primal Vigor

Hoard Robber

Time Sieve

Academy Manufactor

Primal Vigor

How it works

1. Attack with Hoard Robber.
2. Hoard Robber triggers on combat damage to a player, creating two Treasure tokens, two Food tokens, and two 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.