Lands you control can tap to produce at least ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Steps
Activate all mana producing lands you control by tapping them, adding at least ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Cast
Turnabout by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) , untapping all lands you control.
Cast
Cackling Counterpart by paying ({1} magic symbol) ({U} magic symbol) ({U} magic symbol) , creating a token copy of
Scholar of the Ages.
The
Scholar of the Ages token enters the battlefield, returning
Turnabout and
Cackling Counterpart from your graveyard to your hand.
Repeat.
Results
Infinite creature tokens.
Infinite ETB.
Infinite magecraft triggers.
Infinite mana permanents you control can produce.
Infinite storm count.
Infinite untap of permanents you control.
Return all instant and sorcery cards from your graveyard to your hand.