Crystal Grit

Effect

Image
Description	Tiny flakes of crystal are embedded in you, serving as a sign that you are still alive despite all that hunts you.
Effects	+4 Strength +4 Will (Hidden: +1 Etheric Defense for each Bone Effect beyond the first — ie. +1 with two bone effects, +2 with three bone effects. Note that Crystal Grit does not itself count as a bone effect.)

Source

From Sudden Sandstorm from having a spear of the sands equipped and a bone effect. (20-45 Duration)