  A /bCrystal Ball/z will allow you to divine your skill levels in all manner of magical skills including: elemental skills, skills in each school of magic, potion skill, ritual skill, spell casting skill, and one’s overall magician skill level.
<~><~>  One can create a Crystal Ball using a /bBrass Ingot/z, /bWood Planks/z, /bCrushed Hydrangea/z, and /bWhite Stained Glass/z.