Bugbear Demon-Touched

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.

Spell Beacons. Once per turn, the demon-touched can deal an extra 7 (2d6) damage to a creature it hits with a weapon attack if that creature is within 5 feet of an ally of the demon-touched that isn't incapacitated.

Spellcasting. The demon-touched is a 3rd level caster. Its spellcasting ability is charisma (spell save DC 13, +5 to hit with spell attacks). The demon-touched has the following warlock spells prepared:

Cantrips (at will): eldritch blast, frostbite, chill touch
1st level (4 slots): armor of agathys*, hex**, hellish rebuke, witch bolt
2nd level (2 slots): misty step, crown of madness

* The demon-touched will cast this first
** The demon-touched will try to maintain this spell at all times.

Eldritch Blast. Ranged spell attack: +5 to hit, range 120 feet Hit: 6 (1d10) force damage

Frostbite. Range: 60 feet, 4 (1d6) cold damage, DC 13 Con save for no damage. Disadvantage on next attack

Chill Touch. Ranged spell attack: +5 to hit, range 120 feet Hit: 5 (1d8) necrotic damage. Can't heal until next turn

Hex. Bonus Action: Deal an extra 1d6 necrotic when hit. Can transfer when target falls to 0 HP. Range: 90 feet.

Witch Bolt. Ranged spell attack: +5 to hit, range 30 feet Hit: 7 (1d12) lightning damage. Can repeat damage every turn for 1 minute after cast.

Crown of Madness. Range: 120 feet. Charmed creature must make melee attack before moving against creature of caster's choosing. DC 13 Wis save to resist.

Quarterstaff. Melee Weapon Attack. +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) bludgeoning damage

Hellish Rebuke. Range: 60 feet, 11 (2d10) fire damage, DC 13 Dex save for half damage.