Time Lord's Regeneration

Regeneration: When you reach 0 hit points, instead of making death saving throws, you may instead choose to regenerate. When you decide to regenerate, two lines of radiant energy originating from you extend to 10 feet in any direction of your choice, along with a third beam, which shoots directly upward for 10 feet. Any creatures touching these beams will take 300D100 Neutral Divine Damage.
The Regeneration process lasts for one round, during which if you take damage, you must make a Constitution saving throw with +5 Divided the amount of damage taken; on a failed save, you are automatically killed. After regenerating, the beams of light disappear and you are restored to full health with a new body.


For 8 hours after regenerating, you heal of 100 HP at the beginning of each round, you subtract 5 feet to your speed, and you have disadvantage on all attack rolls, ability checks, and saving throws. Additionally, you are afflicted with Jumbled Brain for the first 24 hours after your regeneration. You cannot use this ability more than 12 times, unless your DM creates some circumstance which gives you another regeneration cycle (12 regenerations). After you have exhausted all of your regenerations, you must make death saving throws as usual if you reach 0 hit points. Even if you are resurrected after dying through a different process, you do not regain spent regenerations.

Changes

Some of your Personality Traits
DNA
Appearance [Eye color, Skin color, Hair color]
Height
Weight
Mass
Apparent Age
Gender/Sex
Your Blood Type does not Change
Meta Stats {Not Counting Intelligence, Wisdom}
You can lose some of your Skills and Gain some Others
Your Class can Change [PLAYER ONLY!]
Personality Trait (This must be different from your last three bodies) [At Least some of em]
Note: No two bodies can be identical; there must be some noticeable differences between your new body and all of your other ones.

Cost

Cost: -100 Regeneration Energy/RE

States

Normal:
:/
Grace Period:
Upon death, You will enter a state of grace that allows you to hold off your regeneration for up to 50 minutes. This can be useful if you are vulnerable or need to prevent nearby people/stuff from getting goofed up
Post-Regeneration Side Effects:
After regenerating, You are fully healed, fed, and so on, along with other temporary effects. However, you may also experience temporary negative side effects due to the traumatic nature of regenerating every cell in their body.