Wulfgar of Icewind Dale + Lightning Runner + Delina, Wild Mage + Sage of Shaila's Claim
Wulfgar of Icewind Dale
Lightning Runner
Delina, Wild Mage
Sage of Shaila's Claim
Infinite combat phasesInfinite copies of creatures you controlInfinite creature tokensInfinite energy countersInfinite creature ETBInfinite creature LTBInfinite mana creatures you control can produceInfinite untap of creatures you control
How it works
Declare Delina and Lightning Runner as attackers, triggering their abilities twice each.
Resolve a Delina trigger, creating at least one token copy of Sage of Shaila's Claim that enters the battlefield tapped and attacking.
The Sage of Shaila's Claim token(s) enters the battlefield, causing you to get at least EEE.
Repeat from step 2 for the remaining Delina trigger.
Resolve the first Lightning Runner trigger, causing you to get EE and choosing not to pay.
Resolve the second Lightning Runner trigger, causing you to get EE and pay eight E to untap all creatures you control and to get an additional combat phase after this one.
At the end of your combat phase, each creature token created by Delina triggers, exiling themselves.
Repeat each combat phase.
Once you have infinite E, you can target different creatures with Delina's triggers.