Cast Time Stretch by paying ({8} magic symbol) ({U} magic symbol) ({U} magic symbol) , causing you to take two extra turns.
Activate Kiki-Jiki by tapping it, creating a token copy of Scholar of the Ages with haste.
The token copy of Scholar of the Ages enters the battlefield, returning Time Stretch and any second instant or sorcery card from your graveyard to your hand.
Repeat each turn.
Results
Infinite recursion of instants and sorceries from your graveyard.