I’d get rid of the Rock worm, personally, or else the Herdmaster. Because of how they operate they don’t really work well together; the Rock Worm needs clusters of brown gems to really be useful, but the Herdmaster tends to break up clusters.
Beyond that, you have a good mana color balance, but not much synergy. I’d suggest chucking the Rock Worm for something that requires a good bit of mana and uses brown and something else (if yellow or purple, put it in the last position) because the Herdmaster will help power everyone quickly. Even without Epics and Legendaries, you should be able to find a good beefy troop that meets that criteria. Not sure if consoles have Grosh-Nak yet, but if so, DO NOT use the Drake Rider.
If you can put a list of troops we can help alot more then. But yeah alchemist / banshee / Valkyrie combo is great for maps/ gold and pissing off peeps.
4 rock worms isn’t terrible if you’re starting out or 3 rock worm with a deep borer or acolyte are pretty good. Suggest putting the acolyte/borer 3rd and running worms for the rest.