You can spend 10 minutes to perform a ritual to call forth an animal from the wilderness to serve as your faithful companion, known as an animal companion. At the end of the ritual, the animate appears in an unoccupied space that you can see within 10 meters and assumes the form of an animal companion that you know. You can learn a form that you have seen before and that you have detailed knowledge of and you can learn a number of forms equal to your proficiency bonus.
Subtract an amount of mana or psi equal to your mana limit or psi limit each time you take a rest. Your companion is augmented to that amount of mana or psi. The animal is friendly to you and your companions and you always call the same animal.
As an action on each of your turns, you can mentally command your companion if it is within 100 meters of you (if you control multiple creatures, you can command any or all of them at the same time, issuing the same command to each one). You decide what actions your companion will take and where it will move during its next turn, or you can issue a general command, such as to guard a particular chamber or corridor. If you issue no commands, your companion only defends itself against hostile creatures. Once given an order, the creature continues to follow it until its task is complete.
If your companion is ever slain, the magical bond you share allows you to return it to life. With 8 hours of work and the expenditure of 25 sp worth of rare materials, you call forth your companion’s spirit and use your magic to create a new body for it. You can return a companion to life in this manner even if you do not possess any part of its body.