Darkvision. 60ft
Fearful Presence. All creatures within a 60ft cube have disadvantage on all rolls (Except death saving rolls)
Multi-Attack. This creature can make up to 2 attacks
slashing. Melee Weapon Attack: +2 to hit, reach 5 ft., 1 target. Hit: 10 (1d8 + 4) slashing damage.
Bite Melee Weapon Attack +4 to hit , reach 5 ft., one grappled creature. Hit 10 (2d4 + 4) piercing damage and the target creature has disadvantage to escape a grapple.
As a bonus action it can make an extra attack and move
Sudden Fear. If a creature moves 5ft or more away from The Regretful One they must succed a DC 15 Charisma saving throw or be Frightened for 1 minute. They may reapet this saving at the beginning of there turn.
Description
This creatre likes to dewll in areas where it can hide easily
I feel like the Sudden Fear reaction is a bit irrelevant considering it constantly does what frightened does. Look it up in the conditions, fearful presence does half of that. Also, i'd recommend giving it an attack that grapples other creatures, otherwise bite becomes a bit useless since it's an action to try and grapple something. Maybe swap its slashing attack with a reaping lunge, and that attack deals damage and grapples. Pair it with multiattack for a brutal grab and bite combo.