Dark Fathom Armor

Alter: This dark, sea-soaked suit of armor smells of brine and is covered in eldritch runes. You have a +1 bonus to AC and can breathe normally underwater while wearing this armor.

In addition, while wearing the armor, you can use an action to cast black tentacles (spell save DC 15) from it. When cast in this way, the spell targets a 15-foot square centered on your location. You can choose for it to follow you when you move. In addition, you do not need to concentrate on the spell and are immune to its effects when cast in this way. Once this property has been used, it can't again until the next dusk.

Attunement: yes
Rarity: Very Rare
Type: Studded Leather
Cost: 16650gp

Griffons Saddlebag, Vol 1