Boulder

Daemonic Consumption.  Boulder can consume dead creatures that have not been deceased over 8 hours, 48 hours if preserved properly. When Boulder consumes a creature he gains up to 2 new traits of his choice. to be added to this feature list. Boulder can have up to 9  extra features of his choice which can be changed at the end of his next long rest. 

Always angry. Boulder is always under the effect of the rage feature as long as he is conscious. the benefits of his rage are already in his abilities.

Aura of Blood Lust. When any other creature starts its turn within 30 feet of Boulder, that creature must succeed on a DC 17 Wisdom saving throw, or it must immediately take the Attack action, making one melee attack against a random creature within reach. If no creatures are within reach, it makes a ranged attack against a random creature within range, throwing its weapon if necessary.

Hatred for the Magic arts.  Boulder hates magic, and those around him suffer the effects for it. Creatures within 50 feet of Boulder must make a Spell casting check with the dc of 19 in order to cast spells on their turn

Throwing Master. Boulder can throw weapons at their maximum range

Critical master. Boulder can land criticals on 18s and 19s with melee attacks and 19s with ranged attacks

Mage Slayer. When a creature within 5 feet of Boulder casts a spell, Boulder can use his reaction to make a melee weapon attack against that creature. When Boulder damages a creature that is concentrating on a spell, that creature has disadvantage on the saving throw it makes to maintain its concentration. Boulder have advantage on saving throws against spells cast by creatures within 5 feet of Boulder.

Warden of Mages. Creatures hit by Boulder's reaction attacks cannot move on their turn or teleport.

Battle focus. Boulder gains extra resistances and condition immunities so that boulder can focus on the fight. these resistances and immunities are already listed in their respective places.

Relentless Pursuit. Boulder can dash as a bonus action when moving towards other creatures he can see. he also has climbing a swimming speed equal to his normal movement speed.

Legendary Resistance (2)

Multi-attack. Boulder can make 4 attacks of his choice with  wither his Drenched Halberd or his Bone Javelins.

Drenched Halberd. Melee Weapon Attack: +14 to hit, reach 10 ft., 1 target. Hit: # (2d10 + 11) slashing damage, and 4d6 necrotic damage. creatures hit by this weapon must make a dc 17 con saving throw or have their max hit points reduced by the necrotic damage dealt 

Bone Javelin. RangedWeapon Attack: +13 to hit, range 90 ft., 1 target. Hit: # (1d6 + 7) piercing damage, and 4d6 necrotic damage. creatures hit by this weapon must make a dc 17 con saving throw or have their max hit points reduced by the necrotic damage dealt 

Reaction Name. Boulder makes a melee attack using either his fists or with his Drenched pike

Boulder has 3 legendary actions per round, in which he can use at the end of an opponent's turn.

Drenched Halberd (Costs 1 Actions). can make an attack with his Drenched halberd