Bugbear Tyrant

Spellcasting. The bugbear is a 7th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 13, +5 to hit with spell attacks). The bugbear has the following paladin spells prepared:

1st level (4 slots): hellish rebuke, inflict wounds, wrathful smite
2nd level (2 slots): crown of madness, darkness

Brute. A melee weapon deals one extra die of its damage when the bugbear hits with it (included in the attack).

Surprise Attack. If the bugbear surprises a creature and hits it with an attack during the first round of combat, the target takes an extra 7 (2d6) damage from the attack.

Aura of Hate. The bugbear, and any fiends and undead within 10 feet of it, gain a bonus to melee weapon damage rolls equal to to the bugbear’s Charisma modifier (included in the attack). A creature can only benefit from one Aura of Hate at a time.

Divine Smite (1/day). The bugbear channels divine energy through its weapon. When the bugbear hits a creature with a melee weapon attack, it can add 13 (3d8) radiant damage to the attack. The damage increases by 1d8 if the target is a fiend or undead.

Greatsword. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d8 + 5) slashing damage.

Multiattack. The bugbear makes three melee attacks.

Frightful Presence. Each creature of the bugbear’s choice within 30 feet of it must make a DC 13 Wisdom saving throw if it can see the bugbear. On a failed save, the target is frightened of the bugbear for 1 minute. If a creature’s saving throw is successful or the effect ends for it, the creature is immune to the bugbear’s Frightful Presence for the next 24 hours.