Mariner's Leather Armor

Dungeon Master's Guide (2024) p. 278

Type
Light Armor
Magic
Yes
Rarity
uncommon
Weight
10
AC
11

Description

While wearing this armor, you have a Swim Speed equal to your Speed. In addition, if you start your turn underwater with 0 Hit Points, you immediately regain 1d4 Hit Points. The armor can't heal anyone again until the next dawn.

The armor is decorated with fish and shell motifs.