This creature appears as a huge rat with rotting flesh, torn and matted fur, and reddish blazing eyes. Its semi-translucent skin shows discolored bones and muscles.
Dire Shadow Rat CR 1
Str 10, Dex 17, Con –, Int 2, Wis 12, Cha 16
Base Atk +0; CMB -1; CMD 12 (16 vs. trip)
Feats Skill Focus (Perception), Weapon FinesseB
Skills Acrobatics +3 (+7 jump), Climb +8, Perception +8, Stealth +11; Racial Modifiers +4 Stealth
A shadow rat can, as a standard action, assume an incorporeal form for up to 1 hour per day. In this form, the shadow rat loses its natural AC bonus but gains a +2 deflection bonus to AC. While in this form, the shadow rat is AC 16 (+2 deflection, +2 Dex, +2 size), touch 15, flat-footed 13. The shadow rat can still attack corporeal opponents while in its incorporeal form, but its attack only inflicts Strength damage and cannot cause physical damage. The shadow rat gains the incorporeal subtype while using this ability.
A shadow rat can disappear into the shadows as a move action, gaining total concealment in all levels of illumination save bright light.
Organization solitary or pack (6-11)
Dire Shadow Rat from the Tome of Horrors Complete, Copyright 2011, Necromancer Games, Inc., published and distributed by Frog God Games; Authors Clark Peterson and Scott Greene.