Battlestaff

A Battlestaff is a reasonably strong weapon in terms of melee, plus having the advantage of boosting Magic. Mostly, though, it's useful in making elemental battlestaffs. By using the appropriate (earth, water, fire, air) charge orb spell on an Obelisk with an uncharged orb in your inventory, you can make an elemental orb, which you can then attach to the top of the battlestaff. Then, you can take it to Thormac (if you've done Scorpion Catcher) to make a mystic battlestaff.

Battlestaves can be bought from Zaff's in Varrock or from the magic store owner at the Magic guild in Yanille.