Multiclassing

Multiclassing allows you to gain levels in multiple classes. Doing so lets you mix the abilities of those classes to realize a character concept that might not be reflected in one of the standard class options.

With this rule, you have the option of gaining a level in a new class whenever you advance in level, instead of gaining a level in your current class. Your levels in all your classes are added together to determine your character level. For example, if you have three levels in Wizard and two in Fighter, you’re a 5th-level character.

As you advance in levels, you might primarily remain a member of your original class with just a few levels in another class, or you might change course entirely, never looking back at the class you left behind. You might even start progressing in a third or fourth class. Compared to a single-class character of the same level, you’ll sacrifice some focus in exchange for versatility.

Prerequisites
To qualify for a new class, you must meet the ability score prerequisites for both your current class and your new one, as shown in the Multiclassing Prerequisites table. For example, a barbarian who decides to multiclass into the druid class must have both Strength and Wisdom scores of 13 or higher. Without the full training that a beginning character receives, you must be a quick study in your new class, having a natural aptitude that is reflected by higher-than-average ability scores.

Hit Points and Hit Dice
You gain the hit points from your new class as described for levels after 1st. You gain the 1st-level hit points for a class only when you are a 1st-level character.

You add together the Hit Dice granted by all your classes to form your pool of Hit Dice. If the Hit Dice are the same die type, you can simply pool them together. For example, both the fighter and the paladin have a d10, so if you are a paladin 5/fighter 5, you have ten d10 Hit Dice. If your classes give you Hit Dice of different types, keep track of them separately. If you are a paladin 5/cleric 5, for example, you have five d10 Hit Dice and five d8 Hit Dice.

Proficiency Bonus
Your proficiency bonus is always based on your total character level, not your level in a particular class. For example, if you are a fighter 3/rogue 2, you have the proficiency bonus of a 5th-level character, which is +3.

Proficiencies
When you gain your first level in a class other than your initial class, you gain only some of the new class’s starting proficiencies, as shown in the Multiclassing Proficiencies table.

Class Features
When you gain a new level in a class, you get its features for that level. You don’t, however, receive the class’s starting equipment, and a few features have additional rules when you’re multiclassing: Innate Techniques, Extra Attack, Unarmored Defense, and Spellcasting.

Innate Techniques
If you already have an Innate Technique, you can’t gain it again from another class, unless you originally had Body Manipulation. Your Innate Technique counts only your highest class level(You would gain the features from your 3 levels of Warrior, and wouldn’t gain the Innate Technique features from shikigami). You can only use the Innate Technique features one at a time.

Extra Attack
If you gain the Extra Attack class feature from multiple classes, the features don’t add together. You can’t make more than two attacks with this feature unless it says you do (as the fighter’s version of Extra Attack does). Similarly, the warlock’s eldritch invocation Thirsting Blade doesn’t give you additional attacks if you also have an Extra Attack.

Unarmored Defense
If you already have the Unarmored Defense feature, you can’t gain it again from another class.