One of the most fucked over megas competitive wise
>High af attack stat, strongest STAB is 70 BP
>Slow, frail
>Prankster didn't even work first turn in Gen 6, in Gen 7, when they fix it, they nerf it LOL, making Dark-types immune, mons that it can't touch at all btw
>Prankster itself is a weird choice considering it's still pretty slow, not bulky at all and all the boosts were wasted in its Atk stat, so you don't even know what utility it could bring to your team
Really, if a mega could be revamped, it would be this one, at least give it Drain Punch/Hazards/Actual STAB