Amorphous

From AmtWiki

Amorphous is Monster Ability from the Dor Un Avathar X

Type
Enchantment
School
Sorcery
Range
Self
Effects
Monsters of this type do not have distinct parts to their bodies and are essentially a formless mass. As such, these monsters have only a single hit location. Hits to any valid hit location are treated as if they had struck the player’s torso. Amorphous monsters may not benefit from worn armor and have only one armor location for the purposes of natural armor. Amorphous Monsters are immune to wounding.