Myojin of Cryptic Dreams, and Proud Pack-Rhino

Prerequisites

• Myojin of Cryptic Dreams on the battlefield
• Proud Pack-Rhino in hand
• Myojin of Cryptic Dreams has at least two indestructible counters on it
• available

Steps

1. Cast Proud Pack-Rhino by paying its mana cost
2. Holding priority, activate Myojin by removing an indestructible counter from it, copying the Proud Pack-Rhino spell three times
3. Resolve the first Proud Pack-Rhino spell
4. When the Proud Pack-Rhino 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