champion taboo

climbing claws. taboos are constantly under the effect of spider climb

natural weapons. the creature has claws on its hands and feat instead of fingers

envy. the taboo takes the form of their most recent victim(the taboo does not gain the memories, spells, of the person they kill only the appearance, voice, and languages) when the taboo attacks the disguise drops itself 

battle mastery.if the champion fails a save it can choose to succeed instead and any bonuses to attack rolls are negated 

empowered.on each of its turns one random stat becomes 20 or higher

elemental.once every turn the taboo will roll a d6 the result will determine the element
1)cold
2)fire
3)force
4)radiant
5)psychic
6)lightning

 extra attack.you get an extra attack

Spellcasting. The taboo is a 2nd-level spellcaster. Its spellcasting ability is charisma (spell save DC 16 to hit with spell attacks). The taboo has following wizard, druid, and warlock spells prepared:
Cantrips (at will): blade ward, eldritch blast

1st level (7 slots):false life, inflict wounds, detect magic

2nd level (5 slots):detect thoughts, hold person

3rd level (5 slots):blink, animate dead, bestow curse, counterspell

4th level(4 slots):arcane eye, confusion

5th level(4 slots):hallow, creation

9th level(2 slot):weird

claws. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit:12 (1d10) slashing damage.

pride. instead of attacking the taboo can spend a turn regening 1d20 health or 1d4 spell slots

stretchy limbs.add an extra 20 feat to you're attack

elemental slash.Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit:12 (1d10) thunder damage(the attack counts as magical).

elemental blast.ranged weapon attack +3 to hit range:20/30 ft, 1 target. hit 8(1d10) thunder damage

multiattack.make two attacks with each of you're claws and then go for a bite attack

arms of the dead.cast inflict wounds

arms of hunger. target one player who is within 120 ft of you once you have selected several arm like appendages will exit you're mouth and try to grab that player they have to roll a strength or agility save(whichever is higher) if the player fails they will be dragged within 5 feet of the taboo and then they will be given the "binded" condition until they get hit by the taboo or saved by a teammate

lust. the dm will pick one player when the chosen player has to role a intelligence check and will keep roling intelligence check's on each of their turns until it comes as successful if unsuccessful the character will be under the charmed effect and take 1d4 damage and spend another turn under the charmed effect until you're role is successful

shape changer.you can cast alter self as a cantrip

undead. if hit with necrotic attacks the taboo gains back health equal to

nope.you can cast protect from energy as a 1st level spell

no you don't.if an entity within 15 feet of the taboo casts a spell the taboo will stop them by punching them in the face

Enter the description for how legendary actions work for your monster here.

gluttony(Costs 1 Actions). when this character kills a creature they can eat the victim's body to regen half of the victims max hp

 sloth. you(the dm) choose one player and when the player has been chosen that player must role a charisma saving through if unsuccessful the player loses all of their spell slots or whatever they use instead of them

Enter the description for how mythic actions work for your monster here.

wrath(has to be at 10 health or lower). the taboo will release its full power  and harming everything in a 120 mile radius all players will role a dex check if successful  the player will have 1d6 health if unsuccessful the player takes 3d20 necrotic damage if the player role's a nat 1 its instant death no death saves no chance of healing nothing  and  also if you do survive you're max hp is permanently halved and the taboo is left at 1hp after this attack.

greed. chose one player within 5 feet of the taboo that player looses all of their levels(player must be restrained)

abyss(health must be at 0).the taboo melts and teleport's players to the layer of the king taboo