Inspired by the claim your bro/mega thread: it should have been Mega Sandslash X and Y, not this Charizard and Mewtwo crap.

Mega Sandslash X (emphasis on claws becoming stronger):

Tough Claws
HP: 75
Attack: 140 (+40)
Defense: 120 (+10)
Sp.Atk: 45
Sp.Def: 65 (+10)
Speed: 105 (+40)

Mega Sandslash Y (back becomes more formidable)

Ability: Sand Stream
HP: 75
Attack: 120 (+20)
Defense: 160 (+50)
Sp.Atk: 45
Sp.Def: 80 (+25)
Speed: 70 (+5)