Myojin of Cryptic Dreams, and Pollenbright Druid

Prerequisites

• Myojin of Cryptic Dreams on the battlefield
• Pollenbright Druid in hand
• Myojin of Cryptic Dreams has at least two indestructible counters on it
• available

Steps

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

Results

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