You gain the service of a familiar, a spirit that takes an animal form you choose: Bat, Cat, Frog, Hawk, Lizard, Octopus, Owl, Rat, Raven, Spider, Weasel, or another Beast that has a Challenge Rating of 0. Appearing in an unoccupied space within range, the familiar has the statistics of the chosen form (see "Monsters"), though it is a Celestial, Fey, or Fiend (your choice) instead of a Beast. Your familiar acts independently of you, but it obeys your commands. Finally, when you cast a spell with a range of touch, your familiar can deliver the touch. Your familiar must be within 100 feet of you, and it must take a Reaction to deliver the touch when you cast the spell.