Crank

Detonation (Recharge 5-6). When reduced to 0 hit points, the crank can release a burst of energy in a 10-foot radius. Each creature in that area must make a DC 11 Dexterity saving throw, taking 10 (3d6) force damage on a failed save, or half as much damage on a successful one. After using this ability, the crank is destroyed.

Cannon Turret. The crank has a small cannon protruding from its mouth. It can use its action to make a ranged attack with the cannon.

Cannon. Ranged Weapon Attack: +3 to hit, range 60/120 ft., one target. Hit: 7 (2d6) force damage.

Claw Attack. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) slashing damage.

Multiattack. The crank makes two claw attacks.

Reactive Skitter. When a creature makes a melee attack against the crank and misses, the crank can use its reaction to move up to half its speed without provoking opportunity attacks.