I'm here confused as to why there's Conjuring in this pack with it being limited to only most vanilla mobs.

I ended up spending over an hour of both my friend's and my time trying to get the ritual to work until I finally decided to open up the mod configs to see if the problem would be there and I saw that nearly every mob was blacklisted.
Since Deep Mob Learning as well as Croparia already cover all of the vanilla drops then there isn't really a need for vanilla mob spawners.
My only suggestion is that you maybe remove some mobs from the blacklist giving Conjuring more usefulness than some fancy looking tools and blocks.