A warstaff is a members-only two-handed staff. It requires 60 Magic to wield. Mostly, though, it is useful in making elemental warstaves. By using the appropriate (earth, water, fire, air) charge orb spell on an Obelisk with an unpowered orb in your inventory, you can make an elemental orb, which you can then attach to the top of the warstaff. Then, you can take it to Thormac (if you've done Scorpion Catcher) to make a mystic warstaff for 80,000 coins. Visually the warstaff is identical to the staff, the battlestaff and the dramen staff, although the warstaff holds better stats.