Their are a couple of staffs you can find
Caster staff : 6 attack, -1 crit chance, +10 spell mastery, ranged attack.
Haunter's staff : 6 attack, -1 crit chance, +10% spell damage, ranged attack.
Having ranged attack they will get your caster placed at the back in tactical combat and have a bonus for spell casting.
Nakisisa