Baldur’s Gate 3 has twelve classes in total, and while that’s a decent number of classes there are many more subclasses each class can spec into. The Wizard class has eight subclasses and below are all of them ranked from worst to best.
Wizards of the School of Illusion use trickery to deceit to win battles in Baldur’s Gate 3. They can disguise themselves, trick, distract, and debuff enemies, turn creatures invisible, and in turn spot cloaked enemies.
It can be quite fun to play this subclass but is not something you would want to choose on your first playthrough as it’s useful only in specific situations.
Enchantment spells can be quite useful in battles in Baldur’s Gate 3. You can buff your party members, stun lock enemies for multiple turns, etc. However, similar to the Illusion subclass, this too will only shine in specific situations and require lots of planning and strategizing.
The Transmutation subclass in Baldur’s Gate 3 will allow you to essentially transform the world around including everything from objects to allies. You can also buff your allies in a few unique ways. Combat wise this subclass isn’t the best out there, however, it can be quite useful to make money as long as you land the medicine checks.
Wizards of the Divinations School can essentially look into the past and predict the future in Baldur’s Gate 3. The Portent Dice can be rolled earlier and replaced with an Attack roll, allowing you to shape the future. This can be a very good subclass if you know what you’re doing.
The Necromancy school in Baldur’s Gate 3, as you may have guessed, teaches Wizards to manipulate life energy and therefore control life, death, and undeath. Necromancy spells can limit the enemies’ healing abilities, inflict them with life-drain status effects, and even bring your allies back to life.
Conjuration, as the name suggests, allows you to conjure objects and creatures that will aid in battle Baldur’s Gate 3. For example, the Create Water spell can summon rain and put out fire, which can be extremely useful in fiery situations. You can also create familiars and afflict enemies with status effects, making this subclass good overall.
The Abjuration subclass in Baldur’s Gate 3 allows you to protect your allies from damage and status effects. For example, Ward allows you to protect yourself or your allies from attacks.
You also have access to some healing with the likes of Shield. There isn’t much to say about this subclass apart from that it’s one of the best.
The Evocation School Wizards is what most people would imagine when they hear the word “wizard”. It has the most number of spells to choose from including all the standard fireballs, lightning bolts, etc.
This subclass can be thought of as the opposite of the Abjuration subclass since the latter is all about protection, and the former is all about damage. If you want a pure damage-dealing wizard class then Evocation is the subclass you are looking for.