You’ve designed a great system of interactive combat but half of it doesn’t work when fighting bosses. The “immune” property eliminates so much of it that it’s counter-intuitive to your combat system. Don’t give the players options and then take them away when they need them the most. Instead, consider diminishing returns as a means of limiting the way a player can fight a boss rather than making so many combat options useless.
Leader of Contre [VS], just a bunch of zen adults
focus on Dungeons, Fractals and Raiding.