Basic Regeneration

You touch a creature and stimulate its basic natural healing ability. The target sacrifices a hit die to spell to work. The target regains 1 hit point at the start of each of its turns (high avarage of dice hit points).

D12=10

D10=8

D8=6

D6=4

If the spell is recast before it ends it stacks. The target's severed body members (fingers, legs, tails, and so on), if any, are restored after 2 minutes.