No, you're allowed to have Prankster with it, it won't affect Metal Burst.
Might be useful in some cases, but you can't throw it in front of any poke with strong offense either.
That is true. very strong attacks will KO it, though the same would be said as the other version. I wish it could have Metal Burst and Prankster recover. That would have been broken.
Question. Lagging tail would still let the priority moves go first right? So if you wanted to run Metal burst and always go last, but still go first with Priority moves, you would need lagging tail correct? that would have been an awesome set. Metal Burst, Recover, WoW/Confuse ray, shadow Sneak with Lagging tail and prankster.