How can you create a combo with Freed from the Real, Vizier of Tumbling Sands, Coral Atoll?
user
[START OF COMBO]This combo can be formed with Freed from the Real, Vizier of Tumbling Sands, Coral Atoll

Color identity: U
Mana cost: 
Steps:
  1. Activate Coral Atoll by tapping it, adding {C}{U}.
  2. Activate Vizier of Tumbling Sands by tapping it, untapping Coral Atoll.
  3. Activate Freed from the Real's last ability by paying {U}, untapping Vizier of Tumbling Sands.
  4. Repeat any number of times.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Vizier of Tumbling Sands does not have summoning sickness.
  - Freed from the Real attached to Vizier of Tumbling Sands.
[END OF COMBO PREREQUISITES]
assistant