I play a Zoroark/Lucario Variant with a 1-1 Alolan Muk line, and it is absolutely devastating whenever I decide to drop it. I also play 1 copy of Wally in the list, just to make dropping it even more of a shock when it does happen. Zoroark gives Lucario the consistency it needs, as a lot of builds play Super Scoop Up and Pokemon Catcher, both of which rely on a coin filp. A coin flip is the worst consistency you can get, so I try to avoid it whenever possible. Lucario can also 1HKO an Espeon, using Cyclone Kick with 2 Strong Energy and a Choice Band, but I wouldn't recommend it.