I've been squinting at this feat trying to justify it. It mostly just looks like a worse AoO. (Which is kind of how No Escape looks too, TBH.) Yeah, it triggers off of verbal actions, but that's a pretty narrow range of spells, especially when you consider not every enemy is a caster.
I was looking at it to see if maybe non-casting things with magical tradition tags (breath weapons, for example) might trigger it, but I'm pretty sure that is a no.
And I feel like it might be OK if this feat was just one most players skip, but it's the only Superstitious totem feat until level 12. And 12 feels really late in the game to give the character it's first exciting, active thematic ability. Especially when they've been playing with such heavy restrictions for so long.
Well it's an AoO (against spells) for a class that doesn't already have AoO (and gettin it is a bit trigger). And the fact it triggers off verbal actions as well is a pretty big deal. But the issue I can see with it is: what is stopping a caster from simply moving away from you. If you have no escape then he can't do that, but you are now out of reactions so he is free to cast without getting hit. So if there were anyway that you could do both reactions on the same turn it would be good I think.
However all combat casters with their weapon surge/ true strike etc shenanigans are in for a rude awakening when you smack them and they lose their spell.
I do agree that there should be more feats to take (hopefully there will be in the final version), but depending on your group the restrictions might not be as bad (say a bard for buff with spells and alchemist healing).
Yeah, casters moving away is a real issue.
My problem with verbal only spells being a significant advantage is I'm skeptical how often enemies will use those. There are many nice PC examples, but usually these are meant to round out PC action economy. Monsters will usually have such abilities built in, and giving them these spells seems like a faux pax because it makes tracking their actions harder.
So I mostly expect to see this only matter against a narrow range of NPCs built like PCs.