Destructible Weapon

So i was thinking of a champion that uses like a Sword or a Mace with a health bar for example at lvl 1/3/7/10/13/15/18 the Mace/Sword gets 30/45/50/65/70/85/100 the health decreases by 1 every time he attacks something and destroys when at 0 HP . After losing its weapon it starts fighting with his fists but what is the difference you ask ? Well when you have the weapon you have bigger range 25% more AD and 3 new skills while being disarmed gives you 3 different abilities 15% REDUCED AD , 75 range less and 35% bonus attack speed. They could also give it the option of buying upgrades for your weapons like Viktor but the upgrades would be different just AP and some Spell upgrades it would give the weapon more HP more DMG more armor penetration and stuff like this so you need to adapt what do you need on your weapon this game because the upgrades would be quite expensive so you cant buy all of them in 1 game unless you are really fed . Also i forgot to say that every time you back you get your weapon back and the fact the it doesnt use mana or energy he uses just his own strenght like Garen or Katarina . Tell me if that is gonna be hard to balance or just unfun to play with because of the HP bar on your main weapon or you think its a neash new idea for a new champion ^^