Arkeyan Shield Juggernaut

On Guard. In the first round of combat all attacks against the Juggernaut have disadvantage 

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

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

Magic Weapons. The Juggernaut's weapon attacks are magical.

Alert. The Juggernaut cant be surprised.

Relic of the Arkeyans. A stationary active one cannot be telled apart from a deactivated one.

Multiattack. The Juggernaut makes two melee attacks or one laser attack

Slam. Melee Weapon Attack: +13 to hit, reach 5ft, one target. Hit: 2d12+10 bludgeoning damage. If a Slam attack hit the next Slam attack that turn has advantage to hit

Laser. Ranged Weapon Attack: +14 to hit, reach 50ft, one target. Hit: 6d6+4 fire damage. Upon use has +2 AC until its next turn.

Protective Programming. If it or an ally within 5ft of the Juggernaut is the target of an attack, the Juggernaut can give the attacks target +2 AC. Cant use it if it used the Laser attack its last turn.