Improved Familiars

You familiar evolves gaining, a new type Fey, Celestial, Dragon, or Undead, and new abilities as well as 1 attack.

Stitched flesh familiars are undead with large pools of health and have their own small spell list to cast from.
Celestial familiars gain a unique arcane smite, and can provide healing.
Dragon familiars gain a breath weapon and have advantage on saves against spells and magical effects.
Fey familiars gain flying, know druidcraft, but be warned any magic you channel through them is subject to wild magic.

 All familiars gain a 1d6 claw or bite attack, they use your spell attack bonus to hit.