AutoGuard of Eberron

Traits

Hovering Propulsion. The AutoGuard hovers silently when stationary but emits a loud mechanical hum while moving, making auditory perception difficult. It has disadvantage on Perception checks relying on hearing.

Keen Sight. The AutoGuard has advantage on Wisdom (Perception) checks that rely on sight.

Unstable Core. When the AutoGuard is reduced to 0 hit points, it explodes. Each creature within 15 feet must make a DC 14 Dexterity saving throw, taking 21 (6d6) fire damage on a failed save or half as much damage on a success.

Hard to Hit. When moving 20 feet or more in a round, ranged attacks against the AutoGuard are made with disadvantage due to its erratic movements and high speed.

Actions

Multiattack. The AutoGuard makes three attacks: one with its Cannon and two with its Clockwork Sawblades.

Cannon. Ranged Weapon Attack: +8 to hit, range 60/120 ft., one target.
Hit: 18 (4d8) fire damage.

Clockwork Sawblades. Melee Weapon Attack: +8 to hit, reach 5 ft., one target.
Hit: 14 (3d6 + 5) slashing damage.

Flame Vent (Recharge 5–6). The AutoGuard expels a burst of steam and flame in a 15-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 24 (7d6) fire damage on a failed save or half as much damage on a success.

Evasive Maneuver (Recharge 5–6).
The AutoGuard can immediately move up to half its hover speed without provoking opportunity attacks. If it moves at least 20 feet this way, it gains a +2 bonus to AC until the start of its next turn.

Overclock.
The AutoGuard pushes its internal mechanisms to the limit. Until the start of its next turn, it gains an additional weapon attack when it takes the Multiattack action but takes 5 (1d10) fire damage from overheating.

Rapid Counterattack.
When a creature within 5 feet of the AutoGuard misses it with a melee attack, the AutoGuard can make one Clockwork Sawblades attack against that creature.

Reactive Shields (1/Day).
When hit by an attack, the AutoGuard deploys temporary steam-based shielding. It gains resistance to all damage from that attack and until the start of its next turn.