Conjure life.

The spell channels life energy into the dead or wounded. On a 4 (1d4) a dead creature, returns to 1 hit point, and heals 1d8 hit points but will inflict X damage to you or from an other creature and using one creature to resurrect another will kill them.

The spell can heal an additional 1d4-1, per level but draws additional hit points if this is done.