Create a Huruk's Soul, which is made possible by collecting three level 200 Yourban's shriveled souls.
In order to get the mark, you must get to the appropriate room in Vospire.
This is achieved either by Fatlegs' Xavapult, found in the Towne of Xaventry or by artificing a warpstone to go directly to the guru from 3 180 souls - see Vospire Artificing Guide.
You need to land in an LPK room with west and east exits. Go west to find the levitating guru and give him the three souls.
Note:
I received 57 pp from this at archon. -- Gonom