Edit: Fixed them to add stat boosts up to 100.
Mega Sudowoodo
Rock
Dark
Ability: Sturdy/Rock Head/Rattled --
Stakeout
HP: 70 -> 90
Atk: 100 -> 115
Def: 115 -> 130
SpA: 30 -> 60
SpD: 65 -> 75
Spe: 30 -> 50
BST: 410 -> 510
Movepool Additions: Knock Off, Swords Dance
Description: I felt dark type made more sense than grass type, as its name is fake wood. It gives a trickster kind of feel to it, pretending to be a tree and striking with a sucker punch. Stakeout is due to it "biding its time for the right pokemon to reveal itself to.
Can be played as a wall or sucker-punch sweeper.
Mega Machamp
Fighting
Ability: Guts/No Guard/Steadfast -> Hustle
HP: 90 -> 120
Atk: 130 -> 130
Def: 80-> 130
SpA: 65 -> 65
SpD: 85 -> 75
Spe: 55 -> 85
BST: 505-> 605
Movepool: Mach Punch
Description: It gains a lot of speed, starts hustling.. Now is a more effective sweeper and defensive tank at the cost of special defense.