Otharri, Suns' Glory, Hellkite Charger, and Phyrexian Altar

Prerequisites

• Otharri, Suns' Glory on the battlefield
• Hellkite Charger on the battlefield
• Phyrexian Altar on the battlefield
• An opponent cannot block and kill creatures you control
• You have at least six experience counters

Steps

1. Declare Otharri and Hellkite Charger as attackers, triggering their abilities
2. Resolve the Otharri trigger, causing you to get an experience counter and create at least seven 2/2 Rebel creature tokens that are tapped and attacking
3. Activate Phyrexian Altar seven times by sacrificing seven Rebels, adding
4. Resolve the Hellkite Charger trigger, causing you to pay to untap all attacking creatures you control and get an additional combat phase after this one
5. Repeat each combat phase

Results

• Infinite colored mana
• Infinite combat phases
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers