I started out, obviously, with your Meloetta, Krook, and M-Doom (replaced Beedrill) core. I know you wanted an offensive team, but after testing, the original core loses to too many offensive threats that it made it really hard to :[. Immediate threats that came to mind were Mega Beedril, Mega Aerodactyl, Mega Sharpedo, ScrafShao, Crawdaunt, Mega Pert, Feraligatr, Hydreigon, and Scald (fuuuuck Scald). So, I added CroCune + Whimsicott which checks almost all of the offensive threats as well as providing another wincon and burn spreader to help vs Offense teams (seriously fuck scald lol). Crobat was the final partner to act as a glue mon, providing Ground immunity, keeps Beedrill from tearing the team apart, Fighting check, Defog, and its beautiful speed tier lets us revenge things like Coba, Houndoom, Azelf etc.
Now for some descriptions on the sets. Suicune is pretty much standard CroCune. Not much to explain. Whims has enough speed to outspeed Mence while the rest of her EVs are put into bulk to better check the aforementioned offensive Waters and Hydreigon. I previously put Stun Spore on Whims to cripple Doom's revenge killers like Bee and Aero, but then Shiba's RoarCune slayed everything so Giga Drain was put on. I took the Crobat set from dodmen's "All Falls Down" RMT because I love it and always spam that same set lol. Basically the spread + Sky pl8 lets you OHKO Machamp (fuck that thing) and Shaymin after rocks. Max Speed Bat bc it is silly to creep stuff like Adamant Bee and not invest an extra 12 EVs to outspeed other Bats (also you tie base Aero to emergency defog if need be). Lastly, I tweaked the Meloetta set to creep Entei.
Other options:
- U-Turn > Taunt on Bat to bring in Doomer safely since Bat lures in Steels. I prefer Taunt, though, to beat CM Florges and to help wear down bulky mons and even deny rocks from things like Pert and Emp.
- Offensive Whims > Defensive Whims with Pixie Plate/Yache Berry over Lefties. It is up to your preference tbh, since you said you wanted an offensive team. I just prefer the extra bulk to check the threats longer and give me more time to sweep with Doom/Melo
- Ice Beam or Roar > CM on Suicune. Ice beam helps nail Dragons which can be a pain since they can nail Whims with Fire Blast, HP Fire (Sceptile), or Sludge Wave. Roar gives a secondary check to Gatr/Pedo since fishing for Burns is really not a good way to stop them. However, Cune becomes a lot more passive and I found myself wishing I had CM when I tested Roar/Ice Beam when up against Umby, Empoleon, Florges etc.
- Protect > Taunt on Houndoom. I used to run Protect but it really sucks to be forced out by things like P2 and Alomo which you can easily beat with Doom without their status move. Also stops stuff like lead Forry and denies Recovery to bulkmons.
Some replays:
Overall, I really like SubCM Meloetta. It has a nice surprise factor since people don't know what it's running and it can set up on a bunch of weak special attackers like non-Roar Cune, defensive Zapdos, Florges, P2, and more. The speed it provides is also clutch so stuff like Crawdaunt and Mamo can't revenge you unlike Reuniclus. I hope you enjoy the team!