It's always fun to build around a Wobbuffet core, and this team is super fun to use :] Before I get into the team, one thing to keep in mind when playing with this team is that keeping momentum is key! This is an HO team after all :p Anyways, I changed Landorus-T to an offensive Stealth Rock set because running a suicide lead AND Wobbuffet on the same time limits building a little bit. Lando is EV'd to outspeed 252 neutral nature (NOT Jolly/Timid/etc.) base 100's like Modest Zard-Y. When building with this core, I didn't really build around it. Instead I kinda built with it; I looked for stuff that the core helps. Wobbuffet is definitely a support Pokemon, and Lando-T's role here isn't to abuse Wob but to help it. First thing that came to mind was Azumarill because it's just plain amazing right now, it appreciates Wob making it easier to set up a BD, and it helps with lots of offensive Ice / Water types that Lando hates like Keldeo and Weavile. Next I added Lopunny because it just works really good with those 3 (Wob / Azu / Lando). Wob + Lopunny demolishes opposing offense teams, the double bunny core (Lop + Azu) has great offensive synergy, and Lando-T (and Azu to an extent) help with birdspam which Lop definitely doesn't like. Also, offense just really appreciates a Fighting type offensively for Steels and shit & for annoying Dark types like Bisharp. Healing Wish to make up for lack of hazard removal & to especially help Azumarill have a second chance if you fuck up with the Belly Drum. Next I added Raikou to further help with birdspam and to help take down fat Waters. CM Raikou adds another win-con to this team, and of course one of Wob's main features is it makes it easier for shit to set up. On top of this, seeing Lando-T + Raikou (+ Lopunny), people might expect VoltTurn which is always nice. Entei was added to switch into & handle some Fairies, to take down bulky Steels (mainly Mega Scizor), and to add another breaker to the team. Entei's definitely underprepared for nowadays, and it's kinda difficult to switch into in general. Nothing much to say on this one considering the set is super standard; Espeed Entei + Wob + Mega Lopunny makes opposing offense a pretty easy matchup lol.
This team struggles with a couple of common Pokemon, but it has the tools to handle them for sure... mainly Wobbuffet lol. In particular, Mega Metagross, Mega Altaria, and Clefable stand out. Mega Metagross has a tough time switching in to lots of stuff like a Mega Lopunny HJK, a BD boosted attack from Azumarill, a CM boosted Thunderbolt from Raikou, etc., but it still puts a lot of pressure on the team. If it doesn't have Ice Punch, Lando-T can handle it, and if it doesn't have EQ, Entei can revenge kill. DDance Mega Altaria is definitely annoying; you can play around it with Lando-T and Entei, and Azumarill can help a bit on revenge, but you're really gonna have to play around this one honestly. My advice is if you see a Mega Altaria and you know it's Dragon Dance (DDD or offensive or whatever it doesn't matter), SAVE YOUR WOBBUFFET! Clefable's kinda a bitch, but Entei helps with it, and Azumarill can handle the non-Unaware set. Entei getting para'd is annoying, but Lop has healing wish for a reason I guess :p Some other things that are kinda annoying to this team are SpDef Talon because of it's ability to fucking Wisp your Azu, and super powerful wallbreakers like Hoopa because you just plain can't switch into them rofl. If you just don't play stupid around those things, you'll be fine tho.
If you want your Landorus to have more longevity, you can run Leftovers > Soft Sand, but this isn't really all that necessary & Landorus really appreciates the EQ boost Soft Sand provides. Also on Landorus-T, if you don't care about outspeeding those 252 speed neutral speed nature base 100s (like Modest Zard-Y), you can run 64 HP / 252 Atk / 192 Spe; this still outspeeds shit like Jolly Bisharp, Breloom, Diggersby, etc.. If you don't care about Mega Venusaur, you can get away with running Volt Switch > Extrasensory on Raikou. This helps you with bluffing a non-CM set a bit, and it forms a nice Volt Turn core with Raikou and Landorus-T of course. The only issue is Venusaur becomes quite annoying for the team as a whole. If you don't like Life Orb on Raikou, you can run Leftovers OR you can even try out Zap Plate. Leftovers helps with longevity and all that, and Zap Plate helps you bluff Specs a bit more (no recoil / recovery), and you get a boost to your Thunderbolt with no recoil. Thing is HP Ice REALLY appreciates the Life Orb boost. Zap Plate can be fun with Volt Switch + Thunderbolt, but overall I'd only run this if you absolutely despise LO recoil rofl. If you don't care about HW on Lopunny, you can run Baton Pass for some simple dry passes. This helps with momentum and can give you the upper hand when predicting a switch from your opponent, but considering the lack of hazard removal & statuses like paralysis and burn being annoying, Healing Wish is really nice.