Miirym, Sentinel Wyrm, Bladewing the Risen, and Carrion Feeder

Prerequisites

• Miirym, Sentinel Wyrm on the battlefield
• Bladewing the Risen in hand
• Carrion Feeder on the battlefield
• available

Steps

1. Cast Bladewing by paying
2. When Bladewing enters the battlefield, it and Miirym trigger
3. Resolve the Bladewing trigger, returning any Dragon from your graveyard to the battlefield
4. Holding priority, activate Carrion Feeder by sacrificing Bladewing
5. Resolve the Miirym trigger, creating a nonlegendary token copy of Bladewing
6. When the Bladewing token enters the battlefield, it triggers, returning Bladewing from your graveyard to the battlefield
7. Repeat from step 2
8. Resolve all Carrion Feeder abilities

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite creature tokens
• Infinite +1/+1 counters on Carrion Feeder
• Return all Dragons from your graveyard to the battlefield