From Discworld MUD Wiki
Test by Zorgle, 2022-06-22
With 10/51 in ma.it.he.wand, I failed five or six times to zap a blue ring. Then I TM'ed.
A piece of lore concerning wands becomes clearer for you. You zap your thin stick at the blue crystal ring. The blue crystal ring is a level 30 magic ring. It has zero charges remaining.