Bond of Insight + Twincast + Turnabout
Bond of Insight
Twincast
Turnabout
Requires
Bond of Insight must be in hand.
Twincast must be in hand.
Turnabout must be in hand.
Lands you control can tap to produce at least 
Mana needed: 
Mana needed:
Steps
- Cast Bond of Insight by paying
. - Holding priority, cast Turnabout by paying , untapping all lands you control.
- Activate all mana-producing lands you control by tapping them, adding at least .
- Holding priority, cast Twincast by paying , copying Bond of Insight.
- 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.
- Repeat from step 2.
- If lands you control can tap to produce at least , this combo nets infinite mana, which can be used to infinitely cast instants instead of continuing to copy Turnabout.
Results
Infinite mill. Infinite self-mill. Infinite storm count. Infinite mana lands you control can produce. Infinite magecraft triggers. Put all instant and sorcery cards from your graveyard and library into your hand. Infinite casts of instants in your graveyard and/or hand.
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