Frost Salamander
Frost salamanders are natives of the a&afga, the Plane of Ice that rests between the Plane of Air and the Plane of Water. Frost salamanders hunt by detecting the heat of other creatures. They sometime travel to the frigid climes of the world by wandering through planar gates, drawn by the (relative) warmth of a terrestrial, cold region. Frost salamanders’ aggression towards heat leads them to attack settlements on the frontier. They can mistake the heat of a forge or a campfire as a large, tasty meal, drawing them to attack expeditions and settlements that other predators would avoid.
Frost Salamander Huge monstrosity, unaligned
Armor Class 17 (natural armor) Hit Rojas 168 (16d12 + 64) Speed 60 ft., burrow 40 ft., climb 40 ft.
SIR DEX CON INT WIS CHA 20 (+5) 12 (+1) 18 (+4) 7 (-2) 11 (+0) 7 (-2)
Saving Throws Con +8, W,U+4 Damage Vulnerabilities fire Damage Immunities colcl Skills Perception +4 Senses gprjajp,a60 ft., t,,gagn.60 ft., passive Perception 14 Languages Primordial Challenge 9 (5,000 XP)
Burning Fury. When this creature takes fire damage, its breath weapon automatically recharges.
Actions
taltgagA, The frost salamander makes three attacks, 5c0 claws and one bite. flaw. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 9 (1d10 + 4) piercing damage. Bite. Melee Weapon Attack: +9 to hit, reach 15 ft., one creature. Hit: 9 (1d10 + 4) piercing damage and 11 (2d10) cold damage. Freezing Breath (Recharge 6). The frost salamander opens a nexus to the ,ggfellin its gullet and unleashes a blast of utter cold that can flash freeze and kill. The wind is a 60-foot cone. Each creature in the cone must make a DC 17 Constitution saving throw, taking 44 (8d10) cold damage on a failed save, or half as much (22) on a successful one.
Here's a creature I homebrewed for my campaign. pic.twitter.com/hhxlTecFmF

— Mike Mearls (@mikemearls) April 22, 2016