Your villain power is knowing things and simply… not saying them. You watched the disaster assemble itself in real time, made eye contact with it, and chose to sip your drink. When it finally exploded, you said 'mm' in a tone that legally counts as 'I told you so.'
Friends describe talking to you as being gently x-rayed. You answer questions with questions, keep secrets so well you forget to share your own life, and your resting face makes people confess things they hadn't planned to say out loud.
The gift is real — you do read the room before the room reads itself. The upright Priestess just occasionally says the thing out loud, on purpose, before the explosion. Try it once. The look on their faces is worth it.