Lightning Runner, and Aetherwind Basker

Prerequisites

• Lightning Runner on the battlefield
• Aetherwind Basker on the battlefield
• You control at least six creatures
• An opponent cannot block and kill Lightning Runner or Aetherwind Basker
• Aetherwind Basker does not have summoning sickness

Steps

1. Declare Lightning Runner and Aetherwind Basker as attackers, triggering their abilities
2. Resolve the Aetherwind Basker trigger, causing you to get at least six
3. Resolve the Lightning Runner trigger, causing you to get , and then pay eight to untap all creatures you control and to get an additional combat phase after this one
4. Repeat
5. If you control more than six creatures, this combo will net infinite

Results

• Infinite combat phases
• Infinite energy counters
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control