Body Warmth
(Necromancy)(Necromantic)
Reversible

Range:  0
Components:  V, S, M
Duration:  Special
Casting Time:  1 turn
Area of Effect:  Creature touched
Saving Throw:  Special

A cold blooded or non-living creature (undead) receiving this spell is becoming warm, his heartbeat can be felt and all forms of detect life give positive answers.
If the creature is not intelligent, it is entitled to a saving throw versus spell. Otherwise, the spell can be cast on a willing recipient and is stopped at his wish. In any case, the spell will not last over a day. The spell has no effect on warm blooded creatures, nor does it inflict any damage whatsoever to the receiving creature. It might, at the DM's decision, disable the creature from doing things related to his cold blooded organism.
The material components are the priest's holy symbol and a light source. The light (preferably sunlight) is to be reflected upon the affected creature, while the priest lays his other hand upon its heart.
The reverse, body chill, has the reverse effect upon warm blooded creatures (no heartbeat can be found, detect life gives negative answer etc.).

