The Mane/Lando group is a standard turn core which was really popular in XY. Both take neutral from rocks. The other pivots on the team are keldeo and Tangrowth, one of which doesn't mind hazards but Tangrowth relies on his pivoting to stay healthy. In other words, AV tangrowth's effective recovery is hurt disproportionately by hazards because he has no other way to gain back his main draw, bulk. Rachi's healing wish is nice, but it's going to be aimed at Mega Mane if at all possible.
It does help alleviate Bisharp's issue by outspeeding and stealing his stab resists while threatening burn. Mainly, this just allows keldeo to feel better about being foddered off since Starmie should always be able to handle bisharp on checks. This is also a decent counter-specs keldeo set, although you're still SOL vs anything sub/cm varianted. I feel like there are better picks since RT can be so underwhelming, but the fifth mon is trying to fill a unique set of issues (missing hazard clear, team empowers bisharp's sucker punch, missing keldeo counter) that aren't really easy to fill.