The lost Grome

It lives in the nether and it has its own biome with tall purplish blue leaves and logs/wood. The mob is tall with a stone age look and a slight glow in its hair but it uses a powerfull staff with a purplish blue gem and shoots purple fireballs. It can spawn little goblins to steal items from your inventory, when defeted it drops the gem from its staff and you can craft its staff with the wood from the trees. When the Grome roars it shakes the ground giving 4 hearts of damage.(the sound the grome makes, it sounds like a piglin but deeper and slower).