How can you create a combo with Voltaic Construct, The Blackstaff of Waterdeep, Nyx Lotus?
user
[START OF COMBO]This combo can be formed with Voltaic Construct, The Blackstaff of Waterdeep, Nyx Lotus

Color identity: U
Mana cost: {1} if you have at least three devotion to blue, or {U} available otherwise
Steps:
  1. Activate Nyx Lotus by tapping it, adding at least {3}.
  2. Activate The Blackstaff of Waterdeep by paying {1}{U} and tapping it, causing Nyx Lotus to become an artifact creature until end of turn.
  3. Activate Voltaic Construct by paying {2}, untapping Nyx Lotus.
  4. Activate Nyx Lotus by tapping it, adding at least {3}.
  5. Repeat from step 3.[END OF COMBO STEPS]

Result:
  - Infinite mana among colors with which you have devotion
  - Infinite untap of artifact creatures you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Nyx Lotus does not have summoning sickness.
  - You have at least three devotion to any color.
[END OF COMBO PREREQUISITES]
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