Rime Armor. As long as the drake has more than 40 hit points, it has vulnerability to bludgeoning damage and its AC is 20. Additionally, a creature grappling the drake takes 9 (2d8) piercing damage.
Frost Glands. As long as the drake has less than 40 hit points, it emits an aura of frost. While emitting this aura, it regains 10 temporary hit points at the start of each of its turns and each creature that starts its turn within 10 feet of the drake has its speed reduced by 10 feet until the start of their next turn. This aura ceases until the end of the drake's next turn if it takes any fire damage.
Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage plus 9 (2d8) cold damage.
Ice Lance. Ranged Weapon Attack: +7 to hit, range 20/60 ft., one target. Hit: 15 (2d10 + 4) piercing damage.
Description
Far in the northern reaches, there exists a type of nocturnal dragon known as the Rimecutter Drake. Blue-scaled and quadrupedal, the Rimecutter has one glowing blue gland on each of its shoulders and hips, and five along its spine and down its tail. These glands have the unique property to produce moisture and significantly drop the surrounding temperature, creating an armor of spiked ice. The Rimecutter utilizes this armor mainly for defense, but it has been observed to generate a bolt of ice which it launches using its powerful back muscles at aggravators. The Rimecutter additionally seems to have a gland in its fanged maw, frostbiting the deep wounds it carves.
To make fights more dynamic, I’d recommend giving it an attack that grapples (maybe on a Recharge?). This way, it could apply pressure the same way a shambling mound can and hopefully that part of the Rime Armor feature wouldn’t go to waste.
Regardless, this is a super cool monster!
Thanks! I just realized that I made a mistake on that part of the feature, as well. I’ll take your advice into account as I fix it!