Ashnod's Altar, Bladewing the Risen, and Hellkite Courser

Prerequisites

• Ashnod's Altar on the battlefield
• Bladewing the Risen in the command zone
• Hellkite Courser in hand
• available

Steps

1. Cast Hellkite Courser by paying
2. When Hellkite Courser enters the battlefield, it triggers
3. Holding priority, activate Ashnod's Altar by sacrificing Hellkite Courser, adding
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 Ashnod's Altar by sacrificing Bladewing the Risen, adding
7. Choose to return Bladewing the Risen to the command zone from your graveyard
8. Resolve the Bladewing the Risen trigger from step 5, returning Hellkite Courser from your graveyard to the battlefield
9. Repeat from step 2

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers