Armor of the War Gods

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.

Spellcaster. 4th level spellcaster with Intelligence as it's spellcasting ability: 1st level spells (3 slots) Bless. 2nd level spells ( 2 slots) Amputate. 3rd level spells ( 2 slots) Angelic Armaments. 4th level spells (2 slots) Fire Shield. Spellcasting ability +1. Spell DC 12.

Multiattack. The armor makes two melee attacks.

Slam. Melee Weapon Attack: +4 to hit, reach 5 ft, one target. Hit: 17 (3d8 + 5) bludgeoning damage.

Magic Attacks. It's attacks count as magical. 

Giant Warhammer. Melee Weapon Attack: +6 to hit, reach 10ft, one target. Hit: 18 (6d6+5) if this attack misses, every creature within 10ft of the attack makes a DC 10 Dexterity saving throw or is knocked Prone. (Damage becomes d10 when held with both hands.)

When it's hit with a meele attack, the attacker takes 1d10 piercing damage.