WhipScale mailShield
Add your Charisma modifier to your eldritch blast damage.
After a long rest, you can touch a one-handed weapon you are proficient with. Until you finish a long rest, you can use your Charisma modifier for attack and damage rolls, instead of Strength or Dexterity, when you attack with that weapon.
Bonus Action. Choose a creature you can see within 30 feet of you who is cursed by your hex spell or by your Hexblade's Curse. The target and each creature of your choice within 5 feet of it takes 4 psychic damage.
Bonus Action. Choose a creature you can see within 30 feet. The target is cursed for 1 minute, or until it dies or you become incapacitated. Until the curse ends:
When you slay a humanoid, you can cause its spirit to rise from its corpse as a specter. When the specter appears, it gains 3 temporary hit points. Roll initiative for the specter, which has its own turns. It obeys your verbal commands, and it gains a special +4 bonus to its attack rolls.
The specter remains in your service until the end of your next long rest, at which point it vanishes to the afterlife.
short rest recovery
You have a grimoire called the Book of Shadows. It contains the guidance, mending, and message cantrips, which you can cast while you have the book on your person.
Your Book of Shadows allows you to cast any spell that it contains or that you know as a ritual if it has the ritual tag. The book contains the find familiar and speak with animals rituals.
If you find a ritual spell of 3rd-level or lower in your travels, you can add it to the book by spending 2 hours and 50 gp worth of materials per spell level.
Incorporeal Movement. The specter can move through other creatures and objects as if they were difficult terrain. It takes 5 (1d10) force damage if it ends its turn inside an object.
Sunlight Sensitivity. While in sunlight, the specter has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.
Life Drain. Melee Spell Attack: +4 to hit, reach 5 ft., one creature. Hit: 10 (3d6) necrotic damage. The target must succeed on a DC 10 Constitution saving throw or its hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the creature finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.
Flyby. The owl doesn't provoke opportunity attacks when it flies out of an enemy's reach.
Keen Hearing and Sight. The owl has advantage on Wisdom (Perception) checks that rely on hearing or sight.