How can you create a combo with Five Hundred Year Diary, Filigree Sages?
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[START OF COMBO]This combo can be formed with Five Hundred Year Diary, Filigree Sages

Color identity: U
Mana cost: 
Steps:
  1. Activate Five Hundred Year Diary's first ability by tapping it, adding at least {U}{U}{U}{U}.
  2. Activate Filigree Sages by paying {2}{U}, untapping Five Hundred Year Diary.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite blue mana
  - Infinite mana artifacts you control can produce
  - Infinite untap of artifacts you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least four Clues.
[END OF COMBO PREREQUISITES]
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