Dark Sun: North & South Tablelands Games
Silk of the Dream Spider
Dream spider silk can be spun into fabric or just used from found webbing. Due to the duality of existing in-between the prime and the ethereal, anything completely covered by the silk of the dream spider is shielded from standard psionic and some magical scrying – unless it is an ability that specifically affects the ethereal plane.
Said to have a chance of attracting dream spiders if on the Prime.