Share Vitality

Regular 
The caster heals another’s injuries by transferring them to  himself, losing as many HP as the subject heals. If the subject had a crippled limb, it will remain so – only the HP loss is healed. 
Likewise, the injury applied to the caster will not cripple him (although it could certainly put him into unconsciousness or even kill him; the spell includes no “safety net” for overly kind wizards). The caster does  not suffer the normal skill penalty for spending HP to cast spells, nor is he penalized for recasting on the same subject.

Duration: Permanent; the caster can be healed of his new injuries through normal or magical means. 
Cost: No energy need be expended; high skill only affects casting time. 
Time to cast: 1 second per HP transferred. 
Prerequisite: Lend Vitality.