Animated Plate Armor (Berizen)

Antimagic Susceptibility. The armor is incapacitated while in the area of an antimagic field. If targeted by dispel magic, the armor must succeed on a Constitution saving throw against the caster's spell save DC or fall unconscious for 1 minute.

Battering Ram. Those who are inexperienced in the weight easily succumb to its force of movement. When the Animated Armor takes the shove action and a creature either lacks heavy / medium armor proficiency and / or a strength below 13 the Animated Armor has advantage on the Strength (Athletics) check to shove them over. 

False Appearance. While the armor remains motionless, it is indistinguishable from a normal suit of armor.

Malleable form. When the animated armor grapples a creature, it splits into the pieces of plate armor in an attempt to encase a targeted creature resulting in the following affects. 

• The target of the grapple and the animated armor inhabit the same space and the grappled is now considered to be wearing plate armor without the bonuses of AC (lack of proficiency penalties applying).
• When the Animated Armor is the target of an attack roll and is hit the damage is halved between the Animated Armor and the grappled creature (this takes place before any other damage reduction). When the attacker's roll would hit the grappled target but not the Animated Armor, they take all damage. (If an attacker rolls a 14 and the grappled AC is 14 it takes the damage as the animated armor has an AC of 18)
• Lightning and Fire damage is instantly carried over to the grappled creature.
• If the target is incapacitated or knocked unconscious the Animated Armor is no longer grappled and can move freely with the creature still inside and use any melee weapons it holds (without adding their proficiency bonus). 

Multiattack. The armor makes two melee attacks.

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

Gauntlet slap. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 9 (1d12 + 2) bludgeoning damage.

Claustrophobic grip. As a bonus action and when the Animated Armor is grappling a creature it can constrict around the creature. The grappled creature takes 2d6 bludgeoning damage. This is only 1d6 for small or smaller creatures. This damage increases by 1d6 for every round the Animated Armor uses this feature.