If the Familiar drops to 0 Vitality, it is destroyed, and returns to its home Plane, awaiting for you to resummon it again using this spell.
While your familiar is within Far of you, you can communicate with it telepathically.
Additionally, as a Full Ability, you can see through your familiar's eyes and hear what it hears until you break this abilitty, 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.
While in this direct control of your familiar (acting on your turn), you can cast a Spell with a Range of Reach, of your familiar. Your familiar must be within Far of you to do this.
You extend your hand and call forth your companion. A flicker of energy forms into a small creature—its eyes glinting with intelligence as it steps forward. It glances at you, awaiting your command.