Isshin, Two Heavens as One, Lightning Runner, and Aethergeode Miner

Prerequisites

• Isshin, Two Heavens as One on the battlefield
• Lightning Runner on the battlefield
• Aethergeode Miner on the battlefield
• Aethergeode Miner does not have summoning sickness
• An opponent is unable to block and kill Aethergeode Miner and Lightning Runner

Steps

1. Declare Aethergeode Miner and Lightning Runner as attackers, triggering their abilities twice each
2. Resolve both Aethergeode Miner triggers, causing you to get
3. Resolve the first Lightning Runner trigger, causing you to get and choosing not to pay
4. Resolve the second Lightning Runner trigger, causing you to get and pay eight to untap all creatures you control and to get an additional combat phase after this one
5. Repeat each combat phase

Results

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