I has a question for Trogdor regarding interpretation of rules. This question assumes our party will survive a good number of levels, which may or may not be realistic, but I can't help it.
For warlocks, some of their invocations have a level requirement. Such as the Master of Myriad Forms. Which gives "Alter Self" at will, without using a spell slot. And it requires level 15.
Now, many other times, when a level is required, its specifies class level, not character level. But, in this case, it doesn't specify. I've seen some DM's rule that this requirement is a character level requirement, and others have ruled that it's the opposite.
So I need to know, if I were to say, take two levels of Warlock at levels 14 and 15, or 15 and 16, would I be able to take that invocation? It's really the only invocation I want, and the only reason I'd want to take Warlock at all.
In the end, it's mainly an RP reason. While Gavin seems to love attention, in reality he doesn't like being treated differently. He's learned to live with it, because what else is he going to do, cut his wings off?
At first, he had Disguise Self, but it was an illusion and he hates illusions. He's just not good at it. Then he became level 10, and started studying magic from other classes, and discovered "Alter Self". I know it's almost a waste of Magical Secrets, but I couldn't help it, because it means he can get rid of his wings every now and then, even if it's only for an hour at a time, and even if it costs a spell slot.
But if an Archfey were to come to him and offer the ability to Alter Self at will, if only he were to grant said Archfey certain favors...it might just be too much of a temptation for him to resist.
But, I wouldn't want to take more than two levels in Warlock. And I'd only do it if it were possible to get that Invocation. Unless there's another way for him to have Alter Self at will...