Black Warrior (5e Creature)
From D&D Wiki
Medium aberration (black arms), lawful evil
Martial Advantage. Once per turn, the black warrior 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 black warrior that isn't incapacitated.
Black Sword. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 3) slashing damage.
Ring Shot. Ranged Weapon Attack: +4 to hit, range 30/90 ft., one target. Hit: 5 (1d6 + 2) radiant damage.
Variant: Black Shield
Some black warriors are equipped with black shields. A black warrior with a black shield has a +2 bonus to its AC but can't make ring shot attacks.