But yeah... Not too confident in it or anything else I think up. LOL
It does have Mega-Metagross, but it's not really
centered around it.
Tbh, most of the success I've had is bluffing with TerraCott; you can gain a lot of momentum turn 1 if they assume you're going to Beat Up. Another thing about bluffing Beat Up is that a lot of people will fail to consider the possibility of Terrakion carrying a Focus Sash, especially on the first turn. This has been played to my advantage several times because people are less likely to double-target Terrakion if they have a move that can OHKO it. I'd say Terrakion is probably the MVP most of the time.
Between a faster Prankster Safeguard and Mental Herb, there is very little dickbaggery that Thundurus can do to Whisicott and its partner. Occasionally I've even had people forget that Safeguard is up and waste a turn trying to status me. Whimsicott does kind of have 4MSS, though, so it might be fun to play around with other options, such as Encore (Aegislash lol), Taunt (could be decent over Safeguard), ect.
Arcanine is pretty good this generation, imo. He's resistant against Fairy and can do decent spread damage + possible burns with Heat Wave. Overheat is for certain situations where you need a little bit extra damage output. Extreme Speed is nice priority. Unfortunately this set is completely walled by Heatran (although in a hilarious moment, I once KOed a Focus Sash Heatran with this Arcanine xD).
Suicune is mainly to solve the Heatran problem that this team has without it, and also as a second Tailwind user. I forgot what this spread does exactly; you'd have to ask
ProjectTitan313, as it's his Suicune and he's the one who EVed it. :P
Mow-tom is kind of unique; I'm not sure what others think of it/what I think of it. I'm kind of thinking of replacing it because it doubles up my grass typing, which can be problematic, but I'm not really sure what should fill the position. It is a hilarious way to kill Landorus; the only thing it can do is U-Turn, and most don't see an HP Ice coming.
Metagross was originally designed for a two mega team paired with Mega-Kangaskahn, so the EVs are specially tailored for my specific team to be used as a regular Metagross or a mega. That being said, I should probably change the EVs a bit, since I'm now running it as my sole mega.
As far as my moves go,
Ice Punch - a wonderful move on Metagross and I can't imagine not running it on one. Screw you, Salamence (I've been killing them with Ice Punch Metagross since gen 4, LOL).
Protect - a must on Mega-gross imo because of the change in speed. Although Metagross takes neutral/resisted moves well, it is weak to some semi-common attacking types (Fire, Ground, Dark - including Sucker Punch!), and it is very likely that the opponent will try their darndest to eliminate such a threatening beast.
Bullet Punch - good for picking off things/
Sylveon(It doesn't kill Sylveon, but does a decent amount of damage. Beware of Shadow Ball). You could run Iron Head over this if you want more power/flinch chance over priority.
Zen Headbutt - misses sometimes, but it's nice when it hits...
Other options in include Meteor Mash, Earthquake, Substitute, Rock Slide, ect. Really just depends on your team/what you feel would be most useful. :)