Wyrmlord Koth of the Red Hand

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.

Multiattack. Koth makes two Chromatic Strike attacks.

Chromatic Strike. Melee or Ranged Spell Attack: +6 to hit, reach 5 ft. or range 60 ft., one target. Hit: 10 (3d6) acid, cold, fire, lightning, or poison damage (Koth’s choice).

Spellcasting. Koth casts one of the following spells using Charisma as the spellcasting ability (spell save DC 14, +6 to hit with spell attacks):

At will: control flames, mage hand, minor illusion, prestidigitation

3/day each: mirror image, thunderwave

1/day each: fireball, fly, lightning bolt

Acid Breath (1/Day). Koth exhales acid in a 30-foot line that is 5 feet wide. Each creature in that line must succeed on a DC 13 Dexterity saving throw, taking 17 (5d6) acid damage on a failed save, or half as much damage on a successful one.

Fire Breath (1/Day). Koth exhales fire in a 15-foot cone. Each creature in that area must succeed on a DC 13 Dexterity saving throw, taking 17 (5d6) fire damage on a failed save, or half as much damage on a successful one

Quickened Spell (2/Day). When Koth casts a spell that has a casting time of 1 action, he can instead change the casting time to 1 bonus action for this casting.

Heightened Spell (1/day). When Koth cast a spell that forces a creature to make a saving throw to resist its effects, Koth can give one target of the spell disadvantage on its first saving throw made against the spell.