To begin summoning familiars, you will need to obtain a Bound Script of the entity you wish to befriend. These can be obtained by performing the Ritual of Binding near a relevant entity. See the full list of eligible entities in the Familiars section. Once you have obtained a Bound Script, use it to learn the familiar. Once you have obtained a bound script, you may access your list of familiars from your Spellbook crafting menu in the Familiars section. Selecting a Familiar will summon it in the world and give you Familiar Sickness, preventing you from summoning another one for a short time. To obtain your first familiar, perform the Ritual of Binding near a Starbuncle. Familiars are bound to the player and cannot be transferred between books.