|Frost Lance is good for single monsters|
So we know that we need mana but what else will help your character? There are meta feats that make a difference but the first thing I look for personally is the feat spell focus evocation. This improves the difficult check of all evocation spells, which when you go through spells is one of the most useful schools in the early and middle part of the game and if I am creating a human wizard I will use the extra feat that you get for great spell focus: Evocation. Spells like scorching ray and frost lance are part of my core spell choice for almost every Wizard to start with. Sometimes I play around with the choices but the most effective spells when I am soloing in the early/mid life are nearly all evocation so that will be my focus.
|Merlin is on his 6th Life|
|First Life at Cap|
|I use a character slot to test builds|
Add to the difficulty check
Increase your spell penetration
Select a school of magic and use that focus to maximise your effectiveness
A mixture of area of effect (multiple targets) and single target spells is good.
Find weapons that will boost your magic: Quarterstaffs, clubs and daggers
Increase your pool of mana so you can go longer between shrines.
These are all things to consider when you are building and leveling your character.