For most humans and creatures, being tarred causes their clothes or skins to be covered in a dark or blackish oil like substance. This effect is most noticeable on a tarred Cyclops, as only the body part that got hit will change color.
Tarring lasts approximately 90 seconds and can be removed with an Absorbent Rag or by any spell or item that grants Impervious. As well as being caught on fire removing tarring so does being Frozen or Drenched in water.
The higher the enhancement of an Aneled weapon, the higher the chance it will inflict the debilitation.
As with most debilitations, Tarring has a timer that starts once the target is afflicted. For bow wielders, using Oil Arrows can keep an enemy continually tarred until they get hit with Fire.
Aneled Weapons are effective against Wolf species including Garm and Hellhounds as they will attempt to shake off the oil from their hides, during which time they are vulnerable to attacks.