I have downloaded the game and played the 3 missions avaliable. At first it was quite hard to understand how to play the game. It is quite different from what one expects from a RTS, without ressources to collect, and buildings avaliable to be built. But after a while I got the hang of it, and I think it is pretty fun and interesting. Having to balance summoning units vs summoning buildings, and having your king in the desired summoning base, to have double units.
Things to improve I think would be a better UI, that shows the stats of my units, and what is going on, as I felt quite lost.
You will also need to invest in a good tutorial, as your ideas seem quite novel.
Overall, very interesting!! Keep it up!