Your ability score each increase by 1 

You can speak, read and write Common and one extra language of your choice. Skeletons speak the language they spoke in life. 

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if you were dim light. You can't discern colour in darkness, only shades of grey. 

If damage reduces the animated skeleton to 0 hit points, it must make a Constitution saving throw with a DC of 5+ the damage taken, unless the damage is bludgeoning or critical hit. On a success, the animated skeleton drops to 1 hit point instead. 

An animated skeleton can burrow as an action by dismantling its bones and shaking them into the ground, while underground the skeleton is immune to all affects. The movement speed is reduced to 10 feet while underground. In order to return to the surface another action must be taken. 

Animated Skeletons are immune to poison, exhaustion and cannot be put to sleep even through magical means. 

Animated Skeletons are feared by common people and hunted by guards and heroes, they must wear a disguise in towns. Animated skeletons are proficient in intimidation. 

Animated Skeletons only need 4 hours for a long rest and 30 minutes for a short rest. This is to restore the necrocromatic energy holding them together and keeping their soul intact. While resting a skeletons is a pile of bones but can see and hear normally. 

Animated Skeletons are dark creatures the gods have forsaken. Due to the dark origins of the skeletons they cannot receive healing from divine sources such as healing spells from Clerics or Paladins, They instead receive damage from such healing spells.