Nimbus

Nimbus is a shadow mastiff summoned via the Shadow Magic sorcerer's  Hound of Ill Omen ability.

Combat

 Ominous Bite ()

Damage: 3~18

3d6⁠Piercing

Bite a target and possibly place an  Omen on them.

CON Save

 Melee: 1.5 m / 5 ft

 Umbral Tangle ()

Damage: 2~12

2d6⁠Necrotic

Trap your enemies in shadowy vines.

On a successful save, the target still takes half damage.

STR Save

 Range: Self

AoE: 3 m / 10 ft (Radius)

 Splinter Shadow ()

When you are attacked by a melee attack that does not deal Radiant damage, splinter off a piece of yourself to spawn a new version from the shadows.

Additionally, when moving adjacent to a friendly  Accursed Spectre, Nimbus gains the  Shadow Infusion condition which grants a special reaction from the spectre until the next long rest. The Shadow sorcerer must be multiclassed into Hexblade to take advantage of this reaction since triggering it requires attacking with a  Hexed Weapon.

 Right Behind You ()

Damage: 1~12 + modifiers

1d12 + Summoner's Charisma modifier⁠Necrotic

Materialise next to your summoner's victim.

 Range: 18 m / 60 ft