How can you create a combo with Hoard Robber, Time Sieve, Academy Manufactor, Double Major?
user
[START OF COMBO]This combo can be formed with Hoard Robber, Time Sieve, Academy Manufactor, Double Major

Color identity: BGU
Mana cost: {3}{U}{G}
Steps:
  1. Cast Academy Manufactor for {3}.
  2. Holding priority, cast Double Major for {U}{G} targeting Academy Manufactor, copying the spell.
  3. Allow the copy and the original to resolve.
  4. Move to your combat step.
  5. Attack with Hoard Robber.
  6. Hoard Robber triggers on combat damage to a player, creating three Treasure tokens, three Food tokens, and three Clue tokens.
  7. Activate Time Sieve's ability by tapping Time Sieve and sacrificing five artifacts you control, taking an extra turn after this one.
  8. Repeat from step 5.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Hoard Robber must be on the battlefield
  - Time Sieve must be on the battlefield
  - Academy Manufactor must be in your hand
  - Double Major must be in your hand
  - Hoard Robber does not have summoning sickness and cannot be blocked by at least one opponent.
[END OF COMBO PREREQUISITES]
assistant