With time, players or GMs have asked questions about the subclasses. Here are the questions, and the answers that I would give. Remember, nothing replaces discussion with your GM to come up with a new way to play the subclasses.
The outfits are magically stored in the mask. You can take them all out during a long rest and modify them before storing in the mask again.
The co-star companion can only Help by using their rally die.
Yes. Armor value is increased by both. A Tier 1 chainmail worn by this subclass would see its value go from 4 to 6.
You can only get 1 extra d10, no matter how many 10s you get on your damage dice. If you get a 10 on that extra die you do not add another one.
No, bonus apply to any deal the Blacktongue is involved in.
No, that is not possible.
Yes you define the intensity. the halo can have dim light, or bright light, and anything in between. Change how bright it is during your spotlight.
School of Necrosophy wizards master anatomy and are full doctors.