tome of the orbeon

your patron is orbeon a mimic which was filled with enough hate it evolved into a demon lord

orbeons gift

you can use your fiend patrons powers to summon s mimic in the form of a chest

can be used once per day 

the mimic has 1d4 of hp

Fiend Spells

The magic of your patron ensures you always have certain spells ready; when you reach a Warlock level specified in the Fiend Spells table, you thereafter always have the listed spells prepared.

Fiend Spells

Warlock Level	Spells
3	Burning Hands, Command, Scorching Ray, Suggestion
5	Fireball, Stinking Cloud
7	Fire Shield, Wall of Fire
9	Geas, Insect Plague

orbeons gift of death

the caster makes the targeted mimic roll a dex saving throw 13

if the mimic fails the save it loses 1d8 of hp and the warlock gains it

if it succeeds the mimic gets a opportunity attack

orbeons evasiveness

if there are 5 or more mimic within 50 feet of the warlock any attack has disadvantage

orbeons kins

once per turn you can summon a mimic in orb sword or arrow form

orb  does 1d4 of slashing damage every turns its stuck in a enemy if they fail a 12 dex saving throw

they may rip it out doing 1d10 to themselves

sword does 1d6 slashing damage and has to make a dex saving throw of 14 or be grappled

arrow does 1d6 piercing damage and the target must make a dex saving throw of 14 or be knocked prone