3rd-Level Necromancy
Casting Time: 1 action
Range: Touch
Components: VSM($) (diamonds worth 300 gp, which the spell consumes)
Duration: Instantaneous

You touch a creature that has died within the last minute. That creature returns to life with 1 hit point. This spell can't return to life a creature that has died of old age, nor can it restore any missing body parts.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the creature returns with 5 hit points, plus 5 additional hit points for each spell level above 3rd.

Source: PHB 272, SRD