Your Constitution score increases by 2 and and two other ability scores of your choice increase by 1.

Due to their undead nature, Skeletons are immortal and cannot age, though over time their bones may begin to weaken if not taken proper care of.

Skeletons are usually evil in nature but strong willed skeletons can retain their alignment they had in life.

Skeletons are most commonly 5 to 6 feet tall but can be almost any height.Your size is medium.

Your base walking speed is 30 feet.

You have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

For a brief moment you are able to halt the magical flow keeping your body together and detach a body part. While it is disconnected from your body you can still control its functions (e.g disconnecting your arm and using the fingers to move it around)

Arm-You are able to wield your disconnected arm as a club that deals 1d4+your STR modifier bludgeoning damage. You are proficient in this type of attack.

Head-When you detach your head from your shoulders you are still able to use all of its functions (e.g sight, talking & other senses) 

Ribs-You are able to use your detached rib as a lock pick that you have proficiency in

You don't require air, food, drink or sleep. You are immune to poison damage as well as the poisoned and exhausted conditions though you have vulnerability to bludgeoning damage. You count as Undead for the effects of spells.

You can speak, read and write common and one other language of your choice.

The Skeleton has advantage on saving throws against any effect that turns undead. The skeleton is immune to the effect of Destroy Undead though it will be stunned for 1 minute of combat by the effect if it fails its saving throw, the Skeleton can repeat it's saving throw at the start of each of its turns.