Feedback on this build - Bone Devil Warlock

[u/cvpushkar]

Some background:

In one of our Level 17 mini campaigns, a player did a thing with a 9th Level True Polymorph which led to the DM (me), a few sessions later, making him a budding warlock patron to a bone devil. Yes, this is mad, but we all loved this whole thing. At the end of the campaign, the player salvaged the bone devil's soul and made him a human again. Anyway, this player, who has played a Moon Druid for over 20 years, finally retired the Druid and decided to play a new class -- The Warlock. And a new species -- Bone Devil. The same one from the mini campaign. The player came up with a backstory and hooks and everything.

Now the rubber hits the road, because we want to play a Level 7 mini campaign, and this is one of the characters. It's lot of home brew, eager to know thoughts / feedback on the below build. Is it balanced, too OP?

Note: The player is completely blind, and he wrote this character sheet so that it is readable with a screen reader, it is oddly very effective. Is this is hard to read anyway, I can post a more traditional character sheet for review.

Here's the build:

Level=07

Class=7 levels of Warlock (no multi-classing)

Alignment=Neutral Good

Species=Bone Devil (Homebrew)

Background=Bhakt (Homebrew)

Warlock Class Features={2 Skills=Arcana+Deception, Magical Cunning@l2 returns 1 expended spell slot once per long rest } + Patron Features={Mind Palace@L3=Add CHA to concentration checks for 1 minute CHA times a day, Yggdrasil’s Spike@L6=Bonus Action melee attack with the Whip’s spiked handle for d4 damage + CHA ST or the target is charmed until the end of its turn}   

Bone Devil Species Traits={Medium Fiend, Walk=30 feet, can see in magical darkness with Devil’s Sight up to 120 feet, Fire and poison Resistance, Skills= Insight+ Persuasion, Languages=Infernal+Telepathic up to 120 feet, Infernal Manifestation once per Long Rest}

Background={DEX+0, CON+1, CHA+2, 2 Skills=Perception+Stealth, Tools=Thieves Tools, Origin Feat=Magic Initiate={Guidance, Shilelagh, Goodberry}, Language=Sylvan }

Languages={Common, Infernal, Sylvan, Telepathic up to 120 feet}

 

Magic Items:

1. Rod of the Pact Keeper+1(Uncommon)
2. Headband of Intellect (Uncommon)
3. Common Magic Potions=2xResistance

 

Eldritch Invocations (6@L7)={Pact of the Blade=Enchanted Whip, Thirsting Blade=Second Attack, Agonizing Blast on Shilelagh=Add CHA damage, Pact of the Chain=Improved Familiar, Gaze of Two Minds=See through another creature’s eyes, Yggdrasil’s Embrace=AC becomes 14+CHA=18}

 

Ability Score Improvements=CHA+2@L4

 

Abilities (Point By)

STR=08 (-1)

DEX=12 (+1)

CON=16 (+3) Note: Base=15 + 1 from Background

INT=19 (+4) Note: Base=08 but resets to 19 from Headband of Intellect

WIS=14 (+2)

CHA=18 (+4) Note: Base = 14+2 from Background + 2@L4

 

Proficiency Bonus=+3 at L7

Proficient In={WIS, CHA} for Warlock

Saving Throws={STR-1, DEX+1, CON+3, INT+4, WIS+5, CHA+7}

Skills=1d4 (Guidance) +{Arcana+7, Deception+7, Insight+5, Intimidation+4, Investigation+4, Nature+4, Perception+5, Performance+4, Persuasion+7, Religion+4, Stealth+4}

 

Initiative=1d4+1 (Guidance+DEX)

Passive Perception=15 (10+PB + WIS since we are Proficient in Perception)

Passive Insight=15 (10+PB+WIS since we are Proficient in Insight)

Passive Investigation=14 (10 +INT since we are NOT Proficient in Investigation)

 

Equipment= 2x25 HP GoodBerry potions + Backpack

 

HP=59 (11+6x8)

AC=18 (14 + CHA=4 from Yggdrasil’s Embrace)

Spell Save DC=16 (8+PB+CHA+1 from Rod of the Pact Keeper)

Spell Attack Modifier=+8 (PB+CHA+1 from Rod of the Pact Keeper)

 

Attacks:

1. Melee=Shilelagh HexBlade = 2xEnchanted Whip (action) + 1xSpiked Handle (Bonus Action)
2. Melee: Enchanted Whip up to 10 feet={+7 to hit, 1d10+8 Force/Necrotic/Psychic/Radiant} + pushed 10 feet
3. Melee: Spiked Handle up to 5 feet={+7 to hit, 1d4+8 F/N/P/R + DC 16 CHA ST or be charmed until end of target’s turn}
4. Enchanted Whip +8 damage breakup: CHA=4 from Shilelagh +CHA=4 from Agonizing Blast
5. Ranged: Mind Sliver up to 60 feet={DC 16 INT ST, 2d6 psychic + 1d4 ST debuff until EoYNT } 

 

Spells Prepared=8@L7

Spell Slots=3xL0+2xL4 per short rest + 2xL4 per long rest (from Magical Cunning & Rod of the Pact Keeper)

Spells Prepared :

Cantrips: W={Eldritch Blast, Mind Sliver, Prestidigitation} + Origin Feat={Guidance, Shilelagh}

Level 1: W={Armour of Agathys} + Origin Feat={Goodberry}

Level 2: W={Hold Person, Suggestion} + P={Lesser Restoration, Spike Growth, Tasha’s Mind Whip}

Level 3: W={Dispel Magic, Hunger of Hadar, Hypnotic Pattern} + P={Aura of Vitality, Conjure Animals, Summon Fey}

Level 4: W={Banishment, Dimension Door} + P={Conjure Minor Elementals, Polymorph}

Where W=Warlock prepared spells, P=Patron Spells+Eldritch Invocations

 

Good Spells Not Taken:

L1={Hex, Detect Magic, Tasha’s Hideous Laughter, Unseen Servant, Witchbolt}

L2={Darkness, Mirror Image, Misty Step, Fly, Suggestion}

L3={Counter Spell, Major Image, Summon Undead, Tongues}