Find Familiar

1st-Level Conjuration (Ritual)
Casting Time: 1 hour
Range: 10 feet
Components: VSM($) (10 gp worth of charcoal, incense, and herbs that must be consumed by fire in a brass brazier)
Duration: Instantaneous

You gain the service of a familiar, a spirit that takes an animal form you choose: bat, cat, crab, frog (toad), hawk, lizard, octopus, owl, poisonous snake, fish (quipper), rat, raven, sea horse, spider, or weasel. With your DM's permission, you may choose other Tiny creatures of CR 0. Appearing in an unoccupied space within range, the familiar has the statistics of the chosen form, though it is an aberration, celestial, elemental, fey, fiend, or undead (your choice) instead of a beast.

Your familiar acts independently of you, but it always obeys your commands. In combat, it rolls its own initiative and acts on its own turn. A familiar can't attack, but it can take other actions as normal.

When the familiar drops to 0 hit points, it disappears, leaving behind no physical form. It reappears after you cast this spell again.

While your familiar is within 100 feet of you, you can communicate with it telepathically. Additionally, as an action, you can see through your familiar's eyes and hear what it hears until the start of your next turn, gaining the benefits of any special senses that the familiar has. During this time, you are deaf and blind with regard to your own senses.

As an action, you can temporarily dismiss your familiar. It disappears into a pocket dimension where it awaits your summons. Alternatively, you can dismiss it forever. As an action while it is temporarily dismissed, you can cause it to reappear in any unoccupied space within 30 feet of you.

You can't have more than one familiar at a time. If you cast this spell while you already have a familiar, you instead cause it to adopt a new form. Choose one of the forms from the above list. Your familiar transforms into the chosen creature.

You can use this spell to form a contract with other creatures not found in this list, such as imps, quasits, pseudodragons, or tressyms. These creatures use the same rules, but are subject to the Companions section of the Resurrection rules.

Finally, when you cast a spell with a range of touch, your familiar can deliver the spell as if it had cast the spell. Your familiar must be within 100 feet of you, and it must use its reaction to deliver the spell when you cast it. If the spell requires an attack roll, you use your attack modifier for the roll.

Source: PHB 240, SRD

Changelog

Added additional creature types the familiar can be.
Added note about how the spell can be used to create a familiar bond with creatures outside the normal list.