Armor of the Black Viper

This suit of magical +3 leather armor is reinforced with adamantine studs. While you're wearing it, you gain resistance to critical hits. Anytime you would normally suffer from a critical hit, roll a d100 percentage dice. On a result of 1-50 the hit becomes a normal hit. On a result of 51-100 the hit becomes a critical hit.

Mariner. While wearing this armor, you have a swimming speed equal to your walking speed. In addition, whenever you start your turn underwater with 0 hit points, the armor causes you to rise 60 feet towards the surface. The armor is decorated with fish and shell motifs.

Glamoured. You can also use a bonus action to speak the armor's command word and cause the armor to assume the appearance of a normal set of clothing or some other kind of armor. You decide what it looks like, including color, style, and accessories, but the armor retains its normal bulk and weight. The illusory appearance lasts until you use this property again or remove the armor.

Made from tough but flexible leather, studded leather is reinforced with close-set rivets or spikes.

Notes: Bonus: Armor Class, Set: Innate Speed (Swimming)