Legend has it that there walks a creature of such horrible malice that it cloaks itself from view in it hatred of humanity.  A shimmer, a glimpse of its horror; that's all an adventurer can see before he feels its icy claws around his throat.  But one thing gives this creature's deception away: its shadow.

So next time you're exploring a forgotten dungeon, keep your eyes out for a shadow with no body, and loosen your sword in its sheath.

(This is a modification of Clint Bellanger's base male mesh.)