!BEWARE THE SOIL!

This 'zombie' rises from the nether's depths covered in soul sand and soil. The magic of the blue flames of the nether resurrect these beings who's bones are solid netherite!

It can throw blasts of blue flame at players and sink into the ground and pop up unexpectedly behind you! Make sure to bring snowballs to put out the fire that powers the revenant, but make sure it dosent walk back into a blue flame, otherwise this mob will regenerate! Once the fires put out for good, even then the magic residue from the flames keeps it stable. After that take a few good swings at it with your new netherite sword ( which would be the only thing that could damage it, besides diamond )

Once slain, it might drop netherite ores, a skull, and magic flame charges depending if you put its fire out or not. Maybe if your a good enough of a craftsman, you could resurrect this mob to be your own nether guardian! just like a golem, you'd need a "t" stack of soul soil. Then put the skull it dropped on top and throw the blue fire charge at it, making a new and loyal Revenant that helps fight hostile mobs aside you.