"This was one of the first Runes I ever recovered," Thorek says, tapping on a stone cube bearing a Rune on its top that looks uncomfortably like the Star of Chaos, only with the arrows pointing inwards. "It's very simple in itself. The tricky part is that it just attracts and absorbs energies, it doesn't do anything with them. Before the Time of Woes we used to use this to seal away malign energies to be buried in exhausted mineshafts." He turns the cube over, revealing another Rune on the bottom, this one of a line that loops three times. "This one's only slightly trickier and most of it's the chiselwork, any Apprentice worth the title should be able to manage it by their third decade. It discharges the energies back out again."