Bond of Insight + Turnabout + Twincast

Mana needed: {5}{U}{U}{U}

U identity

Commander legal

The 3 combo pieces

What must be in place

Lands you control can tap to produce at least {2}{U}{U}{U}{U}

How to execute it

  1. Cast Bond of Insight by paying {3}{U}.
  2. Holding priority, cast Turnabout by paying {2}{U}{U}, untapping all lands you control.
  3. Activate all mana-producing lands you control by tapping them, adding at least {2}{U}{U}{U}{U}.
  4. Holding priority, cast Twincast by paying {U}{U}, copying Bond of Insight.
  5. Resolve the copy of Bond of Insight, causing each player to mill four cards, and returning Turnabout and Twincast from your graveyard to your hand.
  6. Repeat from step 2.
  7. If lands you control can tap to produce at least {3}{U}{U}{U}{U}, this combo nets infinite mana, which can be used to infinitely cast instants instead of continuing to copy Turnabout.

What the combo produces