I don’t have the build, but numerous people have asked me about it.
It does work for supporting infinite Ausrine on your own, but it does have drawbacks to consider as well. Melstis has a fairly long cooldown if you have to cancel it early, and so ultimately if you need to stop channeling it for any reason in particular (placing heals, placing Safety Zone, having to move, having to heal an objective), understand there’s quite a bit of downtime on your trump card.
Fine for dungeons, Zaibas and owls are good for mobile and stationary grind. Fine for world bosses, though more so after R8 if you can take Taoist. Not fine for PvP, as all you have is Ausrine (Krivis assets are close to useless besides for Aukuras, which has a super high cooldown).
It works, but it’s fairly taxing to put that many roles on one person in some situations.