Activate an Island by tapping it, adding ({U} magic symbol) .
Cast High Tide by paying ({U} magic symbol) , creating a delayed triggered ability that adds ({U} magic symbol) whenever an Island is tapped for mana this turn.
Activate four Islands by tapping them, adding ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
High Tide's delayed trigger triggers four times, adding an additional ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Cast Scholar of the Ages by paying ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Scholar of the Ages enters the battlefield, triggering itself, returning High Tide from your graveyard to your hand.
Cast High Tide by paying ({U} magic symbol) , creating a second delayed triggered ability.
Activate two Islands by tapping them, adding ({U} magic symbol) ({U} magic symbol) .
High Tide delayed triggers trigger a combined total of four times, adding an additional ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Cast Ghostly Flicker by paying ({2} magic symbol) ({U} magic symbol) , blinking an Island and Scholar of the Ages.
Scholar of the Ages enters the battlefield, triggering itself, returning High Tide and Ghostly Flicker from your graveyard to your hand.
Repeat from step 7, except that you activate only one Island in step 8 and trigger an increasing number of High Tide delayed triggered abilities in step 9.
Results
Infinite blinking of artifacts, creatures, and lands.