Anubian Rogue

The soldier has Advantage on an Attack roll against a creature if at least one of the gnoll's allies is within 5 feet of the creature and the ally isn't incapacitated.

Once per turn, the soldier can deal an extra 7 (2d6) damage when it hits a target with a weapon Attack and has Advantage on the Attack roll.

The Rogue can take the Disengage action as a bonus action on each of its turns.

Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 4 (1d4 + 2) Slashing damage. If the Attack was made with Advantage, the target suffers a bleeding wound. A bleeding wound persists until the wounded creature regains at least 1 Hit Point. At the start of each of its turns, a creature with a bleeding wound loses 1d4 Hit Points for each bleeding wound it has. Any creature can take an action to staunch the target's wounds, ending one bleeding wound on the target.