Clockspinning + Orvar, the All-Form + Roaming Throne

Mana needed: {9}{U}{U}{U}

U identity

Commander legal

The 3 combo pieces

What must be in place

You control a nonlegendary permanent that enters the battlefield untapped and that can tap to produce at least {U}.

How to execute it

  1. Cast Clockspinning with buyback by paying {3}{U}, targeting Roaming Throne.
  2. Orvar triggers twice, creating two token copies of Roaming Throne.
  3. Resolve Clockspinning, returning it to your hand.
  4. Cast Clockspinning with buyback by paying {3}{U}, targeting Roaming Throne.
  5. Orvar triggers four times, creating four token copies of Roaming Throne.
  6. Resolve Clockspinning, returning it to your hand.
  7. Cast Clockspinning with buyback by paying {3}{U}, targeting any nonlegendary permanent you control that enters the battlefield untapped and that can tap to produce at least {U}.
  8. Orvar triggers eight times, creating eight copies of the mana-producing permanent.
  9. Resolve Clockspinning, returning it to your hand.
  10. Activate four of the copies of the mana-producing permanent by tapping them, adding at least {U}{U}{U}{U}.
  11. Repeat from step 7.

What the combo produces