Devourer

Devourer is an animal that hides underground and pops up unpredictably before attacking. This makes encounters with devourers very dangerous, they are invisible until they pop up and immediately attack, dealing quite heavy damage. When they are out of the ground, they can't move, but will shoot projectiles. If the player moves too far, they return underground and appear unpredictably again. They always pop up to attack in melee and will not target minions.

Outside maps, devourers do not appear in packs, usually only a single devourer appears. In maps, they are far more dreaded, because a group of them can appear all around the player with no warning, surrounding the poor exile and dealing heavy melee damage ( + combo greatly helps). They can be avoided by rolling the Area is Inhabited by Skeletons map mod or a similar one (Inhabited by Animals does not help as devourers are animals).

Abilities
All varieties:
 * Resist Cold
 * Root Spider Burrow (unlike the usual burrowing monsters, devourers can hide again)
 * Root Spider Emerge (deal damage)
 * Shoots fire projectiles

Habitat
Act 2: Act 3: Act 8:
 * The Northern Forest
 * The Caverns
 * The Imperial Gardens
 * The Hedge Maze
 * The Imperial Fields

Uniques

 * The Conqueror Wurm in the Hedge Maze
 * Kamaq, Soilmaker in Narrow Ravine
 * Tunneltrap
 * Ancient Devourer in Untainted Paradise