Wasn't exactly sure what type of build you're using this for but if it's for a healer, you might be interested in this:

Arcane lightning VI
Level Req: 15
Spell Damage: 7 to 72
Mana Cost: 45

+323 Max Mana
+1 to 4 Mana per Attack
+1% Mind Numb
+1% Physical Damage Reduction
+2% Mana Syphon
+30% Heal Mastery

nice one!

but no, it's not for a healer

it's for solo caster

Magical runewood staff
Level Req: 20
Damage: 35 to 93

+625 Max Mana

i have this if u want it

sure

i have slightly better for lvl 25, but yeah

thx