Is the minotaur’s perception of +7 correct?

Does ‘it is proficient in’ qualifier apply to Beastmaster companion saves & skills or just skills?

What if I’m dual-wielding a dagger and a whip…

One of my player is using polymorph at himself to be a T-Rex, Isn’t he abusing?

The dual wielder feat bypasses rapier restriction though, right?

Why Eldritch Knight can retrain their 3rd level spell in any school but Arcane Trickster still cannot?