Bladewing the Risen, Hellkite Courser, and Altar of Dementia

Prerequisites

• Bladewing the Risen in the command zone
• Hellkite Courser in hand
• Altar of Dementia on the battlefield
• available

Steps

1. Cast Hellkite Courser by paying
2. When Hellkite Courser enters the battlefield, it triggers
3. Holding priority, activate Altar of Dementia by sacrificing Hellkite Courser, causing target player to mill cards equal to Hellkite Courser's power
4. Resolve the Hellkite Courser trigger, putting Bladewing the Risen from the command zone onto the battlefield
5. When Bladewing the Risen enters the battlefield, it triggers
6. Holding priority, activate Altar of Dementia by sacrificing Bladewing the Risen
7. Choose to return Bladewing the Risen to the command zone from your graveyard
8. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Bladewing the Risen's power
9. Resolve the Bladewing the Risen trigger from step 5, returning Hellkite Courser from your graveyard to the battlefield
10. Repeat from step 2

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill