Myojin of Cryptic Dreams | Deepglow Skate

Cards

Cast
Deepglow Skate by paying its mana cost.
Holding priority, activate
Myojin by removing an indestructible counter from it, copying the
Deepglow Skate spell three times.
Resolve the first
Deepglow Skate spell.
When the
Deepglow Skate token enters the battlefield, it triggers, putting an indestructible counter on
Myojin.
Repeat from step 2.

This combo results in infinite copies of the
Deepglow Skate spell on the stack, which you can then resolve to infinitely proliferate. This can put infinite indestructible counters on
Myojin to infinitely copy any permanent spell(s) you cast in the future.