Automaton Gatling Gunner

Constructed Nature

The automaton doesn't need to eat, drink, breathe, or sleep.

Combat Programming

The automaton has advantage on saving throws against being charmed or frightened.

Heavy Weapon Platform

The gatling gunner has advantage on saving throws against being knocked prone or moved against its will.

Multiattack

The gatling gunner makes two Gatling Cannon attacks or one Gatling Cannon attack and one Heavy Fist attack.

Gatling Cannon

Ranged Weapon Attack: +6 to hit, range 100/300 ft., one target.
Hit: 10 (2d6 + 3) piercing damage.

Gatling Barrage

The gunner unleashes a sustained stream of bullets in a 30-foot-long, 10-foot-wide line.

Each creature in the line must make a DC 15 Dexterity saving throw, taking 21 (6d6) piercing damage on a failed save, or half as much on a successful one.

After using this ability, the Gatling Cannon overheats.

Heavy Fist

Melee Weapon Attack: +6 to hit, reach 5 ft., one target.
Hit: 10 (2d6 + 3) bludgeoning damage.

Suppression Fire

The gunner targets a 20-foot-radius area within 100 feet and fills it with gunfire.

Until the start of the gunner's next turn, the area is considered difficult terrain for hostile creatures.

A creature that enters the area for the first time on a turn or starts its turn there must make a DC 15 Dexterity saving throw, taking 10 (3d6) piercing damage on a failed save, or half as much on a successful one.

Brace

The gunner locks its legs and stabilizes its Gatling Cannon. Until it moves, it gains +2 AC and its Gatling Cannon attacks deal an additional 1d6 damage.

Coolant Vent

The gunner vents heat from its weapon, immediately ending the Overheating effect.

Covering Fire

When a hostile creature within 100 feet moves, the gunner can make one Gatling Cannon attack against it. On a hit, the creature's speed is reduced by 10 feet until the end of its turn.

Emergency Plating

When the gunner takes damage from an attack, it can reduce the damage by 8 (1d10 + 3).