I apologize for the wait :(.
So I love mscept and I haven't used it much at all recently but I do think it's underappreciated a bit. I don't think daunt and mscept really do much for each other but they're two cool mons and I was able to make it work. I changed the set to SD Waterium Z Crawdaunt because I think it's just a better set to break through shit in general, DD kinda works on webs but nowhere else. The first thing I added was the core of Doublade + Heattom, this core helps the original core out so much and for several reasons. Doublade gives a solid Lati, Maero, fairy answer, and something that can blanket check most of the tier's fighting types... while Rotom-H gives a pivot that can bring Daunt in but more importantly a reliable sciz check to take some of the load off of Doublade and reliable hazard removal. Diancie made sense in the next slot because of it's ability to set rocks while checking dragons in general (specifically Hydreigon). Diancie is also really good here because it gives Heal Bell support and gives Rotom-H some breathing room as it is also capable of checking special birds. Scarf Krook comes through here for speed control and Pursuit mainly, it also helps the Bish matchup a bit. I gave it Iron Tail > Stone Edge to lure fairies (specifically malt in this case) since Stone Edge really wasn't needed with 3 flying resists in doub + rotom-h + diancie. I hope you like the team, it's pretty fun on paper and T-Wave on Rotom-H is a nice touch to support Crawdaunt oo.
Lmk if you have any questions
LaLul