User blog comment:Prof. Draco/Invent a Wesen/@comment-5959707-20130520204520

Todenschleim   (German- death slime) (inspiration- an acidic Magic the Gathering creature)

This is a nearly extinct wesen that is quite unspecified. The best way to describe this creature is to say that it is characterized by a lethal, acidic slime. When woged it becomes covered in a slimy, dark green substance. Many Grimms have claimed that the oozing of this substance in todenschleim has something to do with the sweat glands. (Just as sweat glands can be linked to psychological state in humans, the emotions of a todenschleim determine the amount of slimy acid that is produced during the woge.) The acidic slime that is produced by these creatures corrodes human flesh and causes severe, life-threatening burns. The results of a lab test done by a Grimm revealed high levels of strong acids, such as sulfuric acid, in this green ooze. Todenschleim almost always suffer from bipolar disorder. If it wasn’t obvious, this can be deathly dangerous. One second, the creature is on cloud nine, and the next, it is oozing strong acids and lethally burning others in its rage. Because of this disorder, todenschleim are usually impulsive, and many passionately regret their past decisions.

Note: Among Grimms and wesen, the todenschleim's acidic slime is referred to as "sauren mord" which means "acidic murder".