Many people think of negative energy when they mention undead energy.
In fact, there is a difference between the two.
To be more precise, undead energy is a type of negative energy.
When emotions and souls intertwine with negative energy, it becomes undead energy. Once it is infused into a corpse, it will resurrect the dead — with death as the driving force.
The body is often just an unimportant shell that, no matter how broken and fragmented, will continue to jerk around as long as the undead energy that dominates and drives it remains.
Most of the magical plagues on Felen are inextricably linked to undead energy.
If this energy is injected into a corpse, it can transform them into various types of undead.
If injected into the living, combined with the germs that are already present, all sorts of strange and magical plagues are born.
The body starts to decay and rot like a dead person, which is the most common symptom.