Due to the necrotic magic healing you, Druid, Cleric, and Paladin healing spells cause damage instead. You are immune to Necrotic damage, and any damage dealt by necrotic damage heals you instead. Conversely, you are vulnerable to Radiant damage. You have advantage on death saving throws. The necrotic magics keeping you alive, also heal over time, and hit die are unaffected.

Due to being a skeleton, you are immune to disease. You are resistant to poison damage and have advantage against being poisoned.

You do not need to eat, drink, or breathe. You do not need to sleep, but during long rests, you need to be in an unmovable state for six hours; you can not dream; you can still see and hear as you are not unconscious, and you are considered prone.

Your creator animated you for a specific purpose it could be anything, including but not limited to housework, having a research assistant, or even canon fodder. Because of this, you gain one tool, simple, or martial weapon proficiency and one skill proficiency.

When at least one arm is free, you can remove the other arm as an action and use it as a club that deals 1d8 bludgeoning damage as a bonus action.

Additionally, you may remove your hand as an action and use them as thieve's tools.

Your Dexterity increases by +2 and you can choose another attribute to increase by +1.

Most skeletons are between 2 and 30, but the true age limit of skeletons is unknown.

Skeletons vary widely in height and build, from barely 5 feet to over 6 feet tall. Regardless of your position in that range, your size is Medium.

Your base walking speed is 30 feet.

You can speak, read, and write Common and one extra language of your choice. Skeletons typically know another language that their creator knew.