Myojin of Cryptic Dreams, and Dramatist's Puppet

Prerequisites

• Myojin of Cryptic Dreams on the battlefield
• Dramatist's Puppet in hand
• Myojin of Cryptic Dreams has at least two indestructible counters on it
• available

Steps

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

Results

• Infinite copies of any permanent spells you control
• Infinite creature tokens
• Infinite ETB
• Infinite proliferate