Dude There's like 3 laws lol
1. Respect this sacred Land
A law we humans should honestly adopt...but if a Mutant is going around eFFin up Krakoa (a living being) I doubt the other Mutants are gonna miss them.
2. Make More Mutants
Not sure how a Mutant can break this one. Use some form of birth control? Abstain from the Krakoa lovefest? Oon Krakoa it's your right to choose....I'm sure Longshot or Megggan will me more than happy to take up the slack
3. Don't murder Humans.
Well that's pretty much a capital offense everywhere but if a Mutant thinks they'll stand a better chance at a fair trail with a human judge after killing a human....