life as a skeleton Add-on 1.21+

Now you can truly feel like a real monster in Minecraft. With the life as a skeleton add-on, you become part of the undead world. This mod turns you into a Skeleton. You'll gain the ability to summon a mini-army of Skeletons simply by sneaking, but your allies will only exist for a limited time.

In daylight, your character takes damage from the sun just like regular mobs. Summoning Skeletons creates 3 regular Skeletons and 1 Hyperskeleton, which disappear after 12 and 8 seconds respectively.