Wand of Resistance

This slim, wooden wand is topped with a small, spherical cage, which holds a pyramid-shaped piece of hematite. The wand has 3 charges. While holding it, you can use an action to expend 1 of its charges to cast the resistance spell. The wand regains all expended charges at dawn. If you expend the wand's last charge, roll a 1d20. On a 1, the wand transforms into a Wand of Guidance .