You have reached the pinnacle of Necromancy and transformed yourself into a lich. This entails undergoing the ancient funeral rites of the pharaohs, removing your organs and entombing your body in a sarcophagus amongst your worldly possessions. You become the oldest and most exalted type of lich: a mummy lord. You gain the following benefits in addition to those of your ValdaSpire24 feature.
Canopic Jars
Your spirit jar is a set of four canopic jars containing your stomach, lungs, intestines, and liver. Each one has a specific weakness, which you must discuss with your GM. Your rejuvenation is only stopped when all four canopic jars are destroyed. When you are destroyed, you reform at your sarcophagus.
Magic Resistance
You have Advantage on saving throws against spells and other magical effects.
Mummy Rot
When you deal 20 or more damage with ValdaSpire24, the target is cursed. While cursed, the target can't regain Hit Points, its Hit Point maximum doesn't return to normal when finishing a Long Rest, and its Hit Point maximum decreases by 3d6 every 24 hours that elapse. A creature dies and turns to dust if reduced to 0 Hit Points by this attack.
Whirlwind of Sand
As a Bonus Action, you can transform into a whirlwind of sand, move up to 60 feet, and revert to your normal form. While in whirlwind form, you are Immune to all damage and to the Grappled, Petrified, Prone, Restrained, and Stunned conditions. Equipment you are wearing or carrying remains in your possession.