It is not MY rule- this is a PHB ("canon") feature; if it is good for a warlock, why not for everybody ?
Becauuuuse not everybody
is a warlock? Is that not the point of the classes having their own different features?
The other feats that give you a "little something" of the other classes, give you just that, a
little something. A taste. It is not the same, as flexible, and/or as usable as the full class features.
I did not post it in the homebrew section- this is simple Math evidence 1+1 =2.
I'm not saying it should go in the homebrew section. I
am saying that making this feat requires looking at more than math.
The discussion is on why is it not in the PHB already, since we have a touch of spellcasting and batlemaster maneuvers already as canon feats.
Precisely, "a touch." Not the same as what the class from which it is taken gets.
I am not here to argue or disparage the idea. I think the idea is a decent one. But, as originally presented, I would not allow it at my table...specifically because it is more flexible and usable (OP) when compared to other feats.
As to "why it's not there yet?" I would guess that the "having a pact with a patron gets you these powers" was deemed a bit too narrow in flavor for an "Anybody can do/learn/figure out a little of this" on which they based Feats.
But these 2 feats are downgraded version of the class features.
This is what I'm sayin'.
Soo, I guess removing the changeable capability might be fair (warlocks may still do it, thus).. How many invocations may then be valuable enough at, say 20th level if taken at 4th ?
I'm not sure what you mean by "valuable enough"? If the feat is to mimic Magic Initiate (2 cantrips and 1 1st level spell), I would think this feat would follow something like this:
Gift Pacted (or Pact Gifted?)
You have brushed with the bizarre, skirted the arcane, and/or stepped between the worlds in your time and through some arrangement, temptation, or minor promise, a Patron of power has shared some magical secrets with you.
- The Pacted must choose one of the usual Warlock Patrons: Archfey, Fiend, Great Old One.
- The Pacted has advantage on all Charisma rolls (interactions, saves, etc...) when dealing with one of the following creatures, depending on their patron: Fey (Archfey), Demons (if Demon Fiend), Devil (if Devil Fiend), Aberrations (if GOO).
- Upon taking this feat, the PC innately knows and comprehends the following bonus language, if they don't already: Sylvan (Archfey), Infernal (if Devil Fiend), Abyssal (if Demon Fiend), or Aberration (GOO).
- The PC chooses 2 Warlock Cantrips (this permits, at the least, Eldritch Blast, which opens a number of possible invocations for the Pacted)
- In addition, you choose 1 Invocation that has no Prerequisite greater than casting Eldritch Blast. The recharge of this ability is dependent on the Invocation chosen, as detailed in the Invocation's description (found at the end of the Warlock Class section). Charisma is your spellcasting ability.
That's all. You don't get more as you level up. You get this little smattering of Warlock-ish power [...tempted for more? boowahaha.]
The only in-game/story stuff I can come up with right now would be the Patron is hoping that in giving you this "taste" of power, you might someday join the ranks of their full-fledged warlocks or other minions. Maybe a character finds a long-gone (or not!) Warlock's book of shadows and this is the extent they can decipher on their own. I don't know, I'm sure there's other stories to tell with this.
I'd go with something like that.
