Bugbear Shaman

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.

Spellcasting. The Bugbear Shaman is a 4th-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 12, +4 to hit with spell attacks). It has the following druid spells prepared:

Cantrips (at will): druidcraft, produce flame, thorn whip

1st level (4 slots): earth tremor, faerie fire, healing word 

2nd level (3 slots): dust devil, hold person

Quarterstaff. Melee Weapon/Spell Attack: +4 to hit, reach 5 ft., one target. Hit:  8 (2d6+2) bludgeoning damage