Addon: xFallenWarriors - Exploration-Based
Author: TryAgain
xFallenWarriors - Exploration-Based fills the Overworld, Nether and End with more than fifty kinds of fallen warriors, scattered remains and bone piles. They appear as environmental details and give exploration a reason to stop at places that would otherwise be empty.

Common remains contain bones and assorted supplies, while rare legendary remains can be collected as decorative blocks. Some special variants have their own rewards: lava-covered remains may yield wither skeleton skulls, and skull piles can provide regular skeleton skulls.
A Remains Station lets players create common remains from a Skeleton Dummy through a dedicated interface. Two especially rare sites conceal an Ancient Sword, which can be extracted as a weapon or left inside the display for decoration.
The Remains Station also gives builders controlled access to common variants without making the rare legendary discoveries meaningless.
How to install the add-on
Download the .mcaddon or .mcpack file, open it with Minecraft and wait for the import to finish. Then enable the resource and behavior packs in the world settings. If the add-on requires experiments, turn them on before launching the world.