Hey, this is my first post on Smogon and I'm super excited to be here! I came up with some Mega ideas for some underpowered National Dex mons and here's my favorite.
Mega Lumineon
New Ability: Full Force (All attacking moves are made off of this Pokemon's higher attack stat while retaining its original physical/special aspect. For example, Lumineon can use Flip Turn with its SpAtk of 124 but will still count as a physical move.)
New Typing: Water/Fairy
New Stats: 69/20/120/124/130/97
HP: 69
Attack: 69 ----> 20
Defense: 76 ----> 120
Special Attack: 69 ----> 124
Special Defense: 86 ---->130
Speed: 91 ----> 97
Base Stat Total: 460 ----> 560
New Moves: Moonblast, Taunt, Shadow Ball, Psychic, Stored Power, Calm Mind, Flip Turn, Tail Glow, Cosmic Power, Magic Coat
Description: Mega-Lumineon could be an OU threat because of its bulk, offense, decent speed tier, movepool, and the fact that its a mixed attacker that doesn't suffer from frailty or mediocre attack stats (Lucario, Greninja, Arcanine)