Aether Mechsuit

Immutable Form.
The mechsuit is immune to any spell or effect that would alter its form.

Magic Resistance.
The mechsuit has advantage on saving throws against spells and other magical effects.

Pilot Interface.
If a bonded pilot is within 60 feet of the mechsuit, the mechsuit gains a +2 bonus to attack rolls and saving throws.

Aether Core Overload (1/Day).
When the mechsuit is reduced below 50 hit points, the aether core destabilizes and releases a burst of blue energy. Each creature within 30 feet must make a DC 18 Dexterity saving throw, taking (4d10) force damage on a failed save, or half as much damage on a successful one.

Multiattack.
The mechsuit makes two attacks: one with its Energy Cannon and one with its Claw Slam.

Energy Cannon.
Ranged Weapon Attack: +10 to hit, range 120 ft., one target.
Hit:  (2d10) force damage.

Claw Slam.
Melee Weapon Attack: +9 to hit, reach 10 ft., one target.
Hit:  (1d10 + 2d4) bludgeoning damage.

Steam Burst (Recharge 6).
The mechsuit releases a blast of superheated steam in a 30-foot cone. Each creature in the area must succeed on a DC 17 Constitution saving throw or be blinded until the end of their next turn.

Deploy Turret (Recharge 6).
The mechsuit deploys a small autonomous construct turret in an unoccupied space within 5 feet. The turret has AC 18 and 30 hit points. At the start of the mechsuit’s turns, the turret fires at a creature within 60 feet, dealing (2d8) force damage on a hit. The turret lasts for 3 rounds or until destroyed.

Thruster Dash.
The mechsuit moves up to its speed without provoking opportunity attacks.

Target Lock.
The mechsuit locks onto a creature it can see within 120 feet. The next attack the mechsuit makes against that target before the end of its next turn has advantage.

Energy Shield.
When the mechsuit is hit by an attack, it activates an energy shield that reduces the damage taken by (1d6).