Having bonded deeply with your familiar you get a deeper connection it, gaining the following benefits.

- Once each short rest you can cast Find Familiar with a casting time of an action. Still expending a spell slot

- You can communicate telepathically with and cast spells through your familiar 50 feet further away

- Your familiar has 1 extra hit point

- A spell that requires you to see the target can be cast targeting something your familiar can see. Though the spell's range still applies.
(Example: If your familiar is on the other side of a wall you can cast Misty Step on a point in your familiar's vision. Though the 30f range of the spell still applies)

 - You can cast any cantrip through the familiar. Though it requires an arcane focus or the right components