Bodyguard (5e Creature)
From D&D Wiki
Medium humanoid (any race), any lawfull alignment
Sentinel. Creatures provoke oppotunity attacks when leaving the bodyguards range even if they disengaged. When the bodyguard hits a creature with an oppotunity attack the creatures speed becomes zero for the rest of the turn.
Multiattack. The bodyguard makes three longsword attacks.
Longsword. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage or 8 (1d10 + 3) slashing damage if used with two hands.
Counterstrike. When a creature within 5 ft. of the bodyguard makes an attack against a creature other than the bodyguard, the bodyguard can make an attack against that creature.