How can you create a combo with Sage of Hours, Clockspinning?
user
[START OF COMBO]This combo can be formed with Sage of Hours, Clockspinning

Color identity: U
Mana cost: {9}{U}{U}{U} every turn
Steps:
  1. Cast Clockspinning with buyback by paying {3}{U}, targeting Sage of Hours.
  2. Sage of Hours triggers, putting a +1/+1 counter on itself.
  3. Resolve Clockspinning, putting a  +1/+1 counter on Sage of Hours and returning Clockspinning to your hand.
  4. Repeat from step 1 two additional times.
  5. Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one.
  6. Repeat each turn.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Sage of Hours must be on the battlefield
  - Clockspinning must be in your hand
[END OF COMBO PREREQUISITES]
assistant