Holding priority, activate Myojin by removing an indestructible counter from it, copying the Kiora's Dambreaker spell three times.
Resolve the first Kiora's Dambreaker spell.
The Kiora's Dambreaker token enters the battlefield, putting an indestructible counter on Myojin.
Repeat from step 2.
Once you have a large number of Kiora's Dambreaker triggers, you may put infinite indestructible counters on Myojin, and use them to infinitely copy any permanent spells you control.
Results
Infinite copies of any permanent spells you control.