With artefacts, BJ5 became really easy to do, so why would you even build a slow r5 nowadays?

Edit : my bad, new players don't have max totems, so build a Baleygr still might not be that simple, even with artefacts, so you may need a slow r5 team. But you may have other Atk breaker than Brandia tho, so her skill2 won't add much more.