Infinite combat phasesInfinite copies of creatures you controlInfinite creature tokensInfinite energy countersInfinite creature ETBInfinite lifegainInfinite lifegain triggersInfinite creature LTBInfinite mana creatures you control can produceInfinite untap of creatures you control
How it works
Declare Delina and Lightning Runner as attackers, triggering them each twice.
Resolve a Delina trigger, creating at least one token copy of Reservoir Walker that enters the battlefield tapped and attacking.
When the Reservoir Walker token(s) enter the battlefield, they trigger, causing you to get at least EEE and gain at least 3 life.
Repeat from step 2 for the remaining Delina trigger.
Resolve the Lightning Runner triggers, causing you to get EEEE 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 may target any other creature(s) you control.
This explosive sequence lets Wulfgar of Icewind Dale double up every single attack trigger, turning Delina, Wild Mage and Lightning Runner into an unstoppable engine of endless combat. When both attackers charge, Wulfgar's presence ensures Delina rolls for extra copies while Lightning Runner floods your pool with energy. By copying Reservoir Walker as it enters the battlefield, you continuously farm the exact energy needed to pay Lightning Runner's steep cost and chain additional combat phases indefinitely.