We got another half NRG event! enthusiasm overflow!

To all the lazy people out there that dont want to rewrite their macro Script:
--> give a non-macro'd unit (usually unit 1 and 3 are attacking, so any other) the Avenger !

That's it, enjoy! Side note: Dalnakya units are a little more durable, so give the macro units a decent weapon to ensure the 1 shot. Ive tried it for an hour now and it's working.

EDIT:
A couple extra notes from various helpful comments: why even do dalnakya? - 44 xp compared to 10 xp from earth shrine, chromatic ooze and broken blade drops possible (you need them for expeditions).
doing this with a refill macro might end up in getting you to stage 3 of dalnakya, resulting in the macro being stuck in the boss fight. i recommend you dont auto-refill.
Dont use units with long attack animations, they might end up choosing the same targets.
if you cant get the avenger yet, enable 'auto attack' in the options. I have experienced my units auto attacking the same unit all together at once though, test for yourself.