Moving on to 3rd edition OA there are a few new monsters in this book that were not in 2e or 1e. Converting them here.
Amphibious. The hag can breathe air and water.
Fast Healing. A hag that takes a new skin heals 2 hit points per minute until she reaches her maximum hit points. Once fully healed, the bog hag does not heal more quickly than normal until she dons a new skin.
Horrific Appearance. Any humanoid that starts its turn within 30 feet of the hag and can see the hag’s true form must make a DC 11 Wisdom saving throw. On a failed save, the creature is frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, with disadvantage if the hag is within line of sight, ending the effect on itself on a success. If a creature’s saving throw is successful or the effect ends for it, the creature is immune to the hag’s Horrific Appearance for the next 24 hours. Unless the target is surprised or the revelation of the hag’s true form is sudden, the target can avert its eyes and avoid making the initial saving throw. Until the start of its next turn, a creature that averts its eyes has disadvantage on attack rolls against the hag.
Claws. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage. If the target is a creature, it must succeed on a DC 13 Constitution saving throw against disease or become poisoned until the disease is cured. Every 24 hours that elapse, the target must repeat the saving throw, reducing its hit point maximum by 5 (1d10) on a failure. The disease is cured on a success. The target dies if the disease reduces its hit point maximum to 0. This reduction to the target’s hit point maximum lasts until the disease is cured. The target is also grappled (Escape DC 13).
Skinchanger. A hag can alter her appearance to that of another creature of her general size and shape – for example she can masquerade as a female human but not a male. However, it can only take on the appearance of specific individuals, and only by stealing and then wearing their skin. When a hag dons a victim’s skin, an innate supernatural ability conforms her body to the shape and appearance of her victim. The skin, however, rots as the body decomposes (barring the application of a gentle repose spell), making it useless within a week of the victim’s death.
Hideous creatures draped in the pleasing skin of a familiar com- panion, bog hags are vile shapechangers that prey on humans. Bog hags thrive in the fetid swamps and waterways of Rokugan. Though they originate in the Shadowlands, they are at their dead- liest further north—where no one suspects their presence. A bog hag’s natural form is that of a loathsome green crone with sharp nails and jagged teeth. It stands about 6 feet tall and weighs 110 pounds on average. It thrives by stealing the skin of human vic- tims, wearing the skin like a suit, altering its shape to match, and even masquerading as the victim for short stretches of time. Bog hags speak Oni and Common.
Bog hags stake out a territory in a given body of water near a human community and wait for potential victims to approach the water. A bog hag rarely attacks unless its victim is alone, in which case it swims up behind its prey and attacks in the water.
Banner Credit: “Bog Hag” by Michele Giorgi, (c) Alderac Entertainment.