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.

Invisibility (Recharge 5-6).
The Assassin can use its bonus action to turn invisible for 1 minute. It becomes visible if it attacks or casts a spell.

Sneak Attack.
Once per turn, the Assassin can deal an additional 14 (4d6) damage when it hits a creature with a finesse or ranged weapon attack if the creature is surprised or if the Assassin has advantage on the attack roll.

Spellcasting.
The Assassin is a 5th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 12, +4 to hit with spell attacks). The Assassin has the following spells prepared:

• Cantrips (at will): Mage Hand, Minor Illusion, Prestidigitation
• 1st level (4 slots): Disguise Self, Mage Armor, Shield
• 2nd level (3 slots): Misty Step, Mirror Image
• 3rd level (2 slots): Counterspell, Fear

Multiattack.
The Assassin makes two attacks with its Shortsword or Dagger.

Shortsword.
Melee Weapon Attack: +7 to hit, reach 5 ft., one target.
Hit: 10 (1d6 + 4) piercing damage.

Dagger.
Melee or Ranged Weapon Attack: +7 to hit, range 20/60 ft., one target.
Hit: 8 (1d4 + 4) piercing damage.

Cunning Escape.
Once per short rest, the Assassin can take the Disengage or Hide action as a bonus action.

Unnerving Dodge.
When a creature the Assassin can see attacks it with an attack roll, the Assassin can use its reaction to impose disadvantage on the attack roll.