Sense Undead
As Jarrith begins his examination of the alter, Ashlyn feels out with her senses. Nothing lurks nearby, and the body is not amongst the living dead.
Search
Jarrith begins careful scruitiny of the dais, alter, and related areas. This close, he can see the fine checkerboard pattern of the raised floor and the inlaid ravens on the alter. He sees nothing out of the ordinary on the dais itself, no trip wires or ward signals, but finds something on the alter immediately---traces of silver in intricate patterns, mostly likely indicating a magical ward of some kind. Being magic, it is likely only magic may disarm it---he sees nothing to indicate its nature if it is a trap. The Stalker then painstakingly peers at the raven statue, taking care not to move it. He finds nothing indicating additional wards on it.
Jarrith then takes a moment to look at the face down corpse. Squatting down, he lifts its lank hair to find a surprise---withered flesh! A closer look reveals the body is that of a corpse, but the corpse had been dead a long time. An undead of some sort, its unlife severed. While he cannot identify the type of undead it was other than some corporeal kind [Kn: Religion failed], the half-face helm trapped beneath it is a clear sign of the Emerald Claw.