I was actually kind of interested in the world that you have created, but the plot is what kept me from saying anything. It seems...overly ambitious, for your first rp you're gming on here. It can be really hard to have two diffrent groups going on in the rp, espically with one group traveling towards the other. You're also spreading the players thin, in a rp that you even said was niche, by doing that. Like I said, I like this world, but I think the rp needs to be of a smaller scale and reworked a bit(and a few of the magics do kind of need to be reworked I think).

(Also, in the future, if you want to copy your whole post, just click edit and select it that way. It'll save you from posting all those extra bits at the begaining and the end of the post)