Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite combat phasesInfinite creature tokens with hasteInfinite untap of creatures you controlInfinite mana creatures you control can produceInfinite energy counters
How it works
At the beginning of your combat phase, Saheeli triggers, causing you to pay EEE to create a token copy of Aetherwind Basker with haste.
When the Aetherwind Basker token enters the battlefield, it triggers, causing you to get E for each creature you control.
Declare Lightning Runner and each Aetherwind Basker token you control as attackers, triggering their abilities.
Resolve all Aetherwind Basker triggers, causing you to get E for each creature you control for each trigger.
Resolve the Lightning Runner trigger, causing you to get EE and then pay eight E to untap all creatures you control and to get an additional combat phase after this one.