How can you create a combo with Fall of the Thran, Evolution Sage, Retreat to Coralhelm, Zuran Orb, Thrull Parasite?
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[START OF COMBO]This combo can be formed with Fall of the Thran, Evolution Sage, Retreat to Coralhelm, Zuran Orb, Thrull Parasite

Color identity: GWUB
Mana cost: 
Steps:
  1. At the beginning of your precombat main phase, Fall of the Thran triggers, putting a lore counter on it.
  2. Fall of the Thran's second or third chapter ability triggers.
  3. Holding priority, activate Zuran Orb by sacrificing a land, causing you to gain 2 life.
  4. You may optionally repeat step 3 one additional time.
  5. If Fall of the Thran has three loyalty counters on it, activate Thrull Parasite by tapping it and paying 2 life, removing a lore counter from Fall of the Thran.
  6. Resolve the Fall of the Thran chapter trigger from step 2, causing each player to return two land cards from your graveyard to the battlefield.
  7. Whenever the land(s) enter the battlefield, Evolution Sage and Retreat to Coralhelm trigger for each land that entered the battlefield under your control.
  8. Holding priority, if the land(s) enter the battlefield untapped, you may activate them by tapping them, adding at least {1}.
  9. Resolve the first Retreat to Coralhelm trigger, untapping Thrull Parasite.
  10. Resolve the second Retreat to Coralhelm trigger, if applicable, either causing you to scry 1 or to tap or untap target creature.
  11. Resolve the first Evolution Sage trigger, putting a lore counter on Fall of the Thran.
  12. Repeat from step 2.
  13. If applicable, resolve all remaining Evolution Sage triggers, causing you to proliferate that many times.
  14. If you sacrifice and return two lands each cycle, this combo will net infinite lifegain, infinite untap of creatures you control, and infinite scry 1.[END OF COMBO STEPS]

Result:
  - Infinite landfall triggers
  - Infinite lifegain
  - Infinite lifegain triggers
  - Infinite mana creatures you control can produce
  - Infinite mana lands you control that enter the battlefield untapped can produce
  - Infinite proliferate
  - Infinite scry 1
  - Infinite untap of creatures you control
  - Return all land cards from all graveyards to the battlefield under their owner's control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least one land.
  - Thrull Parasite does not have summoning sickness.
  - Fall of the Thran has exactly one or two lore counters on it.
[END OF COMBO PREREQUISITES]
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