Blue
Ravenous Bugblatter Beast of Traal
"Obviously harmful" is only one portion of the limitations. "Reasonable" is the other. And depending on context all of these don't meet that criteria.I won't explain why "Aid me today with your best ability", "Protect me when I'm adventuring" isn't OBVIOUSLY harmful as Immolate youserlf because It's self explanatory.
"Ordem your best fighters to join me" isn't harmful for the victim.
Suggestion with impunity is incredible powerful as your creativity allows it to be. On a table, talk with your DM what He would allows and be creative.
Psionic Dominate Person with metamagic is incredible god tier.
Suggestion is a lot less than "incredibly powerful". Basically, it allows you to do something with a spell right now that you could potentially otherwise do with social skills and time.