Skill: extend life.
This skill is almost impossible to learn.
The skill takes very long time to use.
This skill does not exactly extend the life of a person, when the soul leaves
the body the mindless corpse will stay behind for a short period of time
determined by the cleric's ability to channel power and skill percent.
The skill does not stay on forever and for it to work properly the cleric
has to be in the same party AND in the same room when the target dies since
the health used to sustain the body will be drained from the cleric.