lucario 78/135 PS

[fluttercraft]

If you have a blend energy and a DCE attached to a lucario 78/135 PS and use hurricane kick would you hit for metal weakness against, say, kyrem from PF? blend only provides 1 energy at a time so to use hurricane kick it would have to be a fighting energy while it would have to be metal for dual armor to give Lucario the metal typing which means you wouldn't hit for super effective unless i'm mistaken.

 

[PokePop]

You're misinterpreting the "one energy at a time" phrase.
That means one "unit" of energy, not one "type"
It provides all of the colors at once, so it would count to give Lucario Metal type.