Myojin of Cryptic Dreams, and Adaptive Sporesinger

Prerequisites

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

Steps

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