Hellkite Courser, Kiki-Jiki, Mirror Breaker, and Phyrexian Altar

Prerequisites

• Hellkite Courser on the battlefield
• Kiki-Jiki, Mirror Breaker on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Kiki-Jiki by tapping it, creating a token copy of Hellkite Courser with haste
2. The Hellkite Courser token enters the battlefield, triggering its ability
3. Holding priority, activate Phyrexian Altar by sacrificing Kiki-Jiki, adding one mana of any color
4. Choose to return Kiki-Jiki to the command zone from your graveyard
5. Resolve the Hellkite Courser trigger from step 2, putting Kiki-Jiki from the command zone onto the battlefield
6. Repeat

Results

• Infinite colored mana
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers