Member of Force Grey in Waterdeep.
Multiattack. The giant makes two greataxe attacks.
Gurt's greataxe. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 26 (3d12 + 7) slashing damage, OR 39 (5d12 + 7) slashing damage, if the target is human.
Rock. Ranged Weapon Attack: +9 to hit, range 60/240 ft., one target. Hit: 28 (4d10 + 6) bludgeoning damage.
Harshnag has legendary resistance. Once per day, when he fails a saving throw, he can choose to succeed instead.