Hobgoblin Devastator

Once per turn, the hobgoblin can deal an extra 7 (2d6) damage to a creature it hits with a damaging spell attack if that target is within 5 feet of an ally of the hobgoblin and that ally isn't Incapacitated.

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.

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.