Buddy

Necrotic Mist. This creature is shrouded in a smoky black and glowing green necrotic mist any living creature that makes contact with this creature takes 1d4 necrotic damage.

Necrotic Regenerating Form. This creature can passively regenerate itself while disengaged from combat for 1d4 hp once each hour. This regeneration can be enhanced from the presence of necrotic energy produced by festering corpses within 100 ft. of the creature when it heals. +1hp for each small corpse, +1d4hp for each medium corpse, +1d6hp for each large corpse, +1d8hp for each huge corpse, and +1d10hp for each gigantic corpse.

Warrior Golem. This creature can equip weapons and armor it is given so long as they fit and can be held by a creature of its size. This creature is proficient with any weapon or piece of armor it is given. This creature can not use tools and can not be proficient with any toolsets.

Large Hands. This creature may not wield one-handed weapons unless they have versatile. If an equipped weapon has versatile this creature uses its two-handed form. This creature wields two-handed weapons in one hand. This creature may equip large two-handed weapons in two hands. This creature may also equip huge two-handed weapons in four hands.

Multiattack. This creature makes two attacks split anyway between Slam, Soul Bite, and Necro Breath or may use a four-arm attack once.

Slam. Melee Weapon Attack: +6 to hit, reach 5ft., one target. Hit: 12(2d12) bludgeoning damage.

Soul Bite. A ghost-like entity whose body is made of smokey black and glowing green mist stretches out from inside this creature and attempts to bite a target within 30ft. The bite has +10 to hit and may pass over other creatures. On a hit, it deals 1d6 necrotic damage and if the target was a living creature it must make a CON saving throw of 13 or will be inflicted with Necro Burn which does 1d4 necrotic damage on each of their turns.

Necro Breath. This creature spews a wave of necrotic mist from its mouth which spreads out in a fan shape 15ft. wide and goes a distance of 30ft. Any creature hit by the wave must make a DEX saving throw of 15. On a failed throw, the creature will take 3d8 necrotic damage, on a successful throw they will take half damage.

Four-Arm attack. This creature may make an attack with each weapon equipped in its four hands. Each attack can have one target, has a range of 5ft., and has a +3 to hit. If a hand is not equipped it makes an unarmed strike for 1d8 bludgeoning damage.