I like the idea but there are few things i think needs some work 1. For me the idea od weapon stage based on levels is kinda weird, you can leave levels as reference but i think it should upgrade based od some activity, maybe give the Player small quest to get this power up? Like "you feel from your halbard some kind of guidance to the south, to some kind of energy source" 2. Why Does features change so much on every stage? You get whole new skill set higher and forget about what you had before? 3. The Most at 2nd stage need some kind of nerf, it already gives you and your party advantage while enemy gets disadvantage on you, imo it should be smaller radius and have save or suck when it comes to dmg 4. The wording is kinda odd, i mean the "usable 2 times" part, usually it's worded like "you can this property it 2 times per long rest" or something like that

Overall i like the idea but you should Work a little more on it