When cast by the most powerful casters, these spells can bring a dead person or animal back to life.
However, the majority of the time these spells will only succeed in contacting the dead's spirit since it takes much more magical power to return the spirit to a body then just to contact it.
It should also be noted that there is only a certain amount of life force in the universe, thus when you attempt to bring back a life, you must steal life force from other living beings to do so. Only the most experienced of casters are also able to control where this life force is taken from.
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