How can you create a combo with Filigree Sages, Doubling Cube?
user
[START OF COMBO]This combo can be formed with Filigree Sages, Doubling Cube

Color identity: U
Mana cost: 
Steps:
  1. Tap Doubling Cube for {3} to add an additional {6}{U}.
  2. Untap Doubling Cube with Filigree Sages.
  3. You now have an additional {1} floating.
  4. Repeat for infinite mana.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - {9}{U} floating.
[END OF COMBO PREREQUISITES]
assistant