Mega Wigglytuff
Type:
Stats-
HP: 140
Atk: 70 -> 130 (+60)
Def: 45 -> 65 (+20)
SpAtk: 85 -> 100 (+15)
SpDef: 50 -> 65 (+15)
Speed: 45 -> 35 (-10)
Ability: Sheer Force
Move Additions: Close Combat, Moonblast
Description: Wigglytuff. Oh, Wigglytuff. It's been outclassed by Clefable for it's whole life. It's always had worse abilities, and worse stats, and now Clefable sits on top of OU. Well, WIGGLYTUFF HAS FINALLY HAD ENOUGH. For you see, Wigglytuff has gotten a lot angrier and has been emphasizing the "tuff" part of its name. It's still cute and all, but don't let that fool you. Seething with anger, it now sports a huge Attack stat and a pretty good Special Attack stat, combined with some decent bulk (let Hariyama be the first to tell you that 140/65/65 bulk is actually good). This anger weighs it down a little, however, so it's slower. This anger is transformed into to power thanks to Sheer Force, boosting moves like Play Rough, Body Slam, and Fire Punch. With this comes new moves in Close Combat, because it's THAT angry, and Moonblast as a nice STAB Fairy move that's also boosted by Sheer Force.
Mega Delcatty
Type:
Stats-
HP: 70
Atk: 65 -> 90 (+25)
Def: 65
SpAtk: 55 -> 80 (+25)
SpDef: 55
Speed: 70 -> 120 (+50)
Ability: Simple
Move Additions: Agility, Knock Off
Description: Delcatty is a cat. It looks nice, but it's design is very basic. It's Simple, to put in a way different way. This Simple design helps Delcatty a ton with a new ability in Simple. Simple allows this kitty to greatly benefit from it's setup moves, including Work Up, the new Agility, Charge Beam, and even Calm Mind. This helps make up for generally low stats for a Mega, even Speed when you have things like Mega Lopunny running around. Speaking of stats, a huge increase in Speed helps it set up against most things, while increases to both offensive stats coincide with Simple boosted Work Up for the ability to run mixed sets. Access to Baton Pass also makes this one of the best Baton Passers without Speed Boost, if not the best, in the game. New moves include Agility to go along with Simple and Knock Off for a strong move to hit Ghosts with.
Mega Musharna
Type:
Stats-
HP: 116
Atk: 55
Def: 85 -> 115 (+30)
SpAtk: 107 -> 147 (+40)
SpDef: 95 -> 125 (+30)
Speed: 29
Ability: Analytic
Move Additions: Moonblast, Dark Pulse
Description: Musharna, the dreamiest Pokemon ever known, now does the job of a setup sweeper 5 million times better than before. For starters, Musharna received a huge boost to Defense and both Special stats, solidifying it's role as a very bulky sweeper, or even just a Defensive Pokemon. But, what is really the best boost to Musharna's setup sweeping ability is its new ability: Analytic. Analytic combined with abysmal 29 Speed means that 90% of the time, you're moving last, taking a hit, and then dealing massive damage. It's like a much, much, much, much, M
UCH better version of Beheeyem, really. It gains Moonblast and Dark Pulse for coverage moves and to go with the dream theme. Moonblast for night, and Dark Pulse for nightmares (It already learns Nightmare).
The descriptions for all of these were actually really fun to write :D