Two questions about hacked Pokemon:
1) All moral problems aside,
what is really wrong with hacked Pokemon in Gen 6?
I know what's wrong with pokemon with hacked stars or abilities, but I'm talking about pokemon that are just hacked for shiny, IV, and/or Egg Moves? I know that, once upon a time ago, hacked pokemon
could corrupt your save file. I also know from experience that attempting to transfer over old hacked Pokemon didn't work (goodbye old Darkrai. You served me well.)
But what's wrong with them now? If I hack for a pokemon that I
could have bred for/soft reset for, but just didn't want to waste the time, what problems might I face later?
2) Is there an in-game way to test for a hack?
- I think I remember reading somewhere that VGC can check for hacks. Is that true? If so, could I then register for a battle competition with potentially hacked pokemon and see whether it gives a "Certain Pokemon in your party cannot be used" message?
If Mewtwo is put to sleep and then mega-evolves to Y, would it wake up instantly? I would imagine so, just verifying.
Yes, it'd wake up instantly.