The Heart is the size of a large fist, of deepest black color, but seems to glow despite it: it is so dark that it is discernible against any background, even in magical darkness. The Heart has a slow beat, it never fastens, it never slows up. The heartbeat can be seen, and it can be felt if touched. Despite the fact that it produces no sound, people would claim they can hear it, for the beat can felt in a short radius around it, felt even in your bones.
OK, what about the heroes?
- the Heart is simply found in a place with strong presence of Undead creatures
- they shall bring it to someone… maybe for destruction, maybe for some nefarious purpose? Many necromancers would be interested in such an item, and powerful Undead definitely too.
- they shall find it and destroy it
Whatever, the Heart is not a good company if you are Living an want to avoid attention. Even if you are protected against its draining powers, and even if you slay its guardians and escape. Wherever you go with it, there rise Undead creatures, big and small, even animals that died next to the road. Passing a cemetery may be downright dangerous, and will infuriate anyone tending to it.
Note: Undead created behave naturally.
A good question is, what is it?
Is it some materialised form of Undead feelings? Is it a creation of a deity (and which one)? Is it only a chance-creation? (Magical catastrophes abound…) Could it be a base for the World’s stability, or could it destroy the world as we know it? Shall it be destroyed, or kept hidden and safe, or free? It seems to be passive. Is it really? Could it be ‘living’ in some reversed way? Could it have wishes of its own, could it be even intelligent?
The Heart’s power lies in Undeath. If there is a corpse or skelet nearby, it will animate it. If there is a wounded Undead nearby, it will heal it. Luckily, it’s powers are limited, as it cannot animate more powerful Undead. There is also a limit on the amount of magic it can contain, once it is exhausted, it takes some time to gather magic from its surroundings. On the other hand, it can drain living beings and convert their life force to magic again. So, wherever the Heart ends up, it creates and attracts Undead. All Undead feel comfortable in its presence, a rare feeling for those living after death. Some may actually start to worship it, creating a cult, very likely with sacrificing living beings. Note: While the Heart cannot drain magic from wizards, it drains magic in its vicinity.