Myojin of Cryptic Dreams | Dramatist's Puppet

Cards

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

This combo results in infinite copies of the
Dramatist's Puppet 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.