Encounters: Storm Horns North

Remorhaz (CR 7)

Huge Magical Beast
Alignment: Usually neutral
Initiative: +1 (Dex); Senses: darkvision 60 ft., low-light vision, tremorsense 60 ft., Listen +8, and Spot +8

AC: 20 (-2 size, +1 Dex, +11 natural), touch 9, flat-footed 19
Hit Dice: 7d10+35 (73 hp)
Fort +10, Ref +6, Will +3

Speed: 30 ft., burrow 20 ft.
Space: 15 ft./10 ft.
Base Attack +7; Grapple +23
Attack: Bite +13 melee
Full Attack: Bite +13 melee
Damage: Bite 2d8+12
Special Attacks: Improved grab, swallow whole

Abilities: Str 26, Dex 13, Con 21, Int 5, Wis 12, Cha 10
Special Qualities: heat
Feats: Awesome Blow; Improved Bull Rush; Power Attack
Skills: Listen +8 and Spot +8
Advancement: 8-14 HD (Huge); 15-21 HD (Gargantuan)

Climate/Terrain: Cold desert
Organization: Solitary
Treasure: None

Source: Monster Manual

Improved Grab (Ex): To use this ability, the remorhaz must hit with its bite attack. If it gets a hold, it automatically deals bite damage and can attempt to swallow the opponent.

Swallow Whole (Ex): A remorhaz can try to swallow a grabbed opponent of Large or smaller size by making a successful grapple check. Once inside, the opponent takes 2d8+12 points of crushing damage plus 10d10 points of fire damage per round from the creature's blazing gut. A swallowed creature can cut its way out by using claws or a Small or Tiny slashing weapon to deal 25 points of damage to the remorhaz's gut (AC 20). Once the creature exits, muscular action closes the hole; another swallowed opponent must cut its own way out. The remorhaz's interior can hold two Large, four Small, eight Tiny, sixteen Diminutive, or thirty-two Fine or smaller opponents.

Heat (Ex): An enraged remorhaz generates heat so intense that anything touching its body takes 10d10 points of fire damage. This is usually enough to melt non-magical weapons, but magic weapons get a Fortitude save (DC 18).

Tremorsense (Ex): A remorhaz can automatically sense the location of anything within 60 feet that is in contact with the ground.

Skills: Remorhazes receive a +4 racial bonus to Listen checks.

Remorhazes hide under the snow and ice until they hear movement above them, then attack from below and surprise prey.

Faerûnian Random Encounters by Region and Locale