Phb 2024 Subclasses Dnd. Your subclass features are fueled from a pool of psionic energy dice which work in many. Inside the phb (2024) you’ll find 10 species, 12 classes, and 48 subclasses.
Many subclasses also add new role options, making monks very diverse despite their homogeneity in their other build choices. In 2024, level three is arguably an even bigger deal, since it is when they gain their subclass, hence why metamagic is now a feature unlocked at level two.