How can you create a combo with There and Back Again, Time Sieve, Hex Parasite?
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[START OF COMBO]This combo can be formed with There and Back Again, Time Sieve, Hex Parasite

Color identity: UBR
Mana cost: {1}{B/P} the first turn, with {1}{B/P} available the second turn if you do not control a Smaug token
Steps:
  1. At the beginning of your precombat main phase, There and Back Again triggers, putting a lore counter on it, triggering its third chapter ability.
  2. Holding priority, activate Hex Parasite by paying {1}{B/P}, removing a lore counter from There and Back Again, and giving Hex Parasite +1/+0 until end of turn.
  3. Resolve the There and Back Again ability, creating a legendary 6/6 Smaug creature token.
  4. If you control two Smaugs, put one into your graveyard due to the legend rule.
  5. If a Smaug dies this way, it triggers, creating fourteen Treasure tokens.
  6. Activate Time Sieve by tapping it and sacrificing five other artifacts, causing you to take an extra turn after this one.
  7. Repeat each turn.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - There and Back Again has exactly two lore counters on it.
  - You control a Smaug token, or you control five additional artifacts.
[END OF COMBO PREREQUISITES]
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