J’Zhirr comes upon the Atronach Stone in the volcanic tundra region of Eastmarch. It is one of the magical standing stones scattered around Skyrim. The Atronach Stone grants an increase in magicka and spell absorption, but there is a price to pay, for the stone also decreases one’s magicka regeneration ability.
J’Zhirr imagines that magic users will find this stone beneficial to them. However J’Zhirr is a fighter and the abilities the Atronach Stone grants have little use to him. So this one leaves the stone untouched.