Hobgoblin Devastator

When the hobgoblin casts a spell that causes damage or that forces other creatures to make a saving throw, it can choose itself and any number of allies to be immune to the damage caused by the spell and to succeed on the required saving throw.

The hobgoblin makes two Quarterstaff or Devastating Bolt attacks.

Melee Weapon Attack +3 to hit, reach 5 ft., one target. 4 (1d6 + 1) Bludgeoning damage, or 5 (1d8 + 1) Bludgeoning damage if used with two hands, plus 13 (3d8) Force damage.

Ranged Spell Attack +5 to hit, range 60 ft., one target. 21 (4d8 + 3) Force damage, and the target is knocked Prone.