An addon for Pufferfishes Skills with a dependancy heavy skill tree. Check the versions tab for dependancies.
Heavily integrates with mods by ZsoltMolnarrr

How to Install RPG Skills (Datapack)
RPG Skills by dwnsdp is verified for Datapack, Fabric, Forge, Quilt across Minecraft versions 1.20.1 (latest release: 0.9+mod, file size: 22 KB). Follow the steps below to install it safely from ModCraft.tv:
- Click the Download button above and select your Minecraft version (1.20.1) and platform (Datapack, Fabric, Forge, Quilt).
- Make sure you have the compatible loader or environment installed for Datapack, Fabric, Forge, Quilt.
- Move the downloaded RPG Skills file into your Minecraft
.minecraft/saves/<world>/datapacksfolder and launch the game.