An opponent is unable to block and kill Delina and Lightning Runner.
Steps
Declare Delina and Lightning Runner as attackers, triggering their abilities twice each.
Resolve a Delina trigger, creating at least one token copy of Aethertorch Renegade that enters the battlefield tapped and attacking.
The Aethertorch Renegade token(s) enters the battlefield, causing you to get at least ({E} magic symbol) ({E} magic symbol) ({E} magic symbol) ({E} magic symbol) .
Resolve the second Delina trigger, creating at least one token copy of any creature you control that enters the battlefield tapped and attacking.
Resolve the first Lightning Runner trigger, causing you to get ({E} magic symbol) ({E} magic symbol) and choosing not to pay.
Resolve the second Lightning Runner trigger, causing you to get ({E} magic symbol) ({E} magic symbol) and pay eight ({E} magic symbol) 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.