SRD (p.266)
Animated Armor CR: 1
Medium construct, unaligned
Armor Class: 18
Hit Points: 33
Speed:
25 ft
Damage Immunities: Poison, Psychic
Condition Immunities: Blinded, Charmed, Deafened, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned
Senses: Blindsight 60ft. (blind beyond this radius), Passive Perception 6
Challenge Rating: 1
( 200 XP)
Proficiency Bonus: +2
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.
False Appearance. While the armor remains motionless, it is indistinguishable from a normal suit of armor.
Actions
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.
This suit of magically animated plate armor clamors as it moves, banging and grinding like the vengeful spirit of a fallen knight.
This empty steel shell clamors as it moves, heavy plates banging and grinding against one another like the vengeful spirit of a fallen knight. Ponderous but persistent, this magical guardian is almost always a suit of plate armor.
To add to its menace, animated armor is frequently enchanted with scripted speech, so the armor can utter warnings, demand passwords, or deliver riddles. Rare suits of animated armor are able to carry on an actual conversation.