I've actually tested with Pokedex Ether engine. You need to run a lot of basic energy in your deck to maximize the chances of getting al least one in your five cards. Don't even bother with Musharna. There is a very low chance you'll hit an Energy in the top two. Hitting one in the top five is unlikely enough. Yes, it does work. It works pretty well if you run enough Energy. But, it's unreliable, since only about a fifth of your deck is Energy. Still, in the early game you have a pretty good chance of hitting an Energy.
You're welcome, btw
You're welcome, btw