Bugbear Boss

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.

Heart of Hruggek. The bugbear has advantage on saving throws against being charmed, frightened, paralyzed, poisoned, stunned, or put to sleep.

Morningstar of Terror. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) piercing damage. On a hit, the target must make a DC 15 Constitution saving throw or take 2d6 necrotic damage as the evil energy within the morningstar eats away at its sanity. On a 20, the creature automatically fails.

Javelin. Melee or Ranged Weapon Attack: +7 to hit, reach 5 ft. or range 30/120 ft., one target. Hit: 10 (2d6 + 3) piercing damage in melee or 6 (1d6 + 3) piercing damage at range.

Legendary Actions: 3/round

Legendary Resistance. 2 uses/day

Call to Attack. Up to three allies within 120 feet of this bugbear that can hear it can each use their reaction to make one weapon attack.

Morningstar of Terror (3 charges). You can expend one charge to release a wave of terror, forcing each creature of your choice in a 30-foot radius extending from you to make a DC 15 Wisdom saving throw or be frightened of you for 1 minute.

Martial Fury. You may make one melee attack against an enemy target within 5 feet of you.