Stellar Beast (5e Creature)
From D&D Wiki
Medium aberration (human, shapechanger), chaotic evil
Saving Throws Str +7, Con +5, Wis +4
Curse of the Stars. At night, the stellar beast turns into a beast. At sunrise, it turns back into a humanoid and loses all memories of what happened during the night. It always reverts to its humanoid form if it dies. The beast only has access to its skills and saving throw proficiencies while in beast form. In humanoid form, all of its statistics are 10 (+0).
Regeneration (Beast Form Only). The stellar beast regains 10 hit points at the start of its turn, and half as much if it took radiant damage during its last turn.
Multiattack (Beast Form Only). The beast makes two attacks, only one of which can be a bite attack.
Dagger (Humanoid Form Only). Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 2 (1d4) piercing damage.
Bite (Beast Form Only). Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage.
Claw (Beast Form Only). Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 17 (3d8 + 4) slashing damage.
Etherealness (Beast Form Only). The beast enters the Ethereal Plane from the Material Plane, or vice versa.