Gem earth and stone

This fist sized emerald gleams with smoldering power. It fits perfectly into the Staff of Ruin.

Property (Attuned): You must be a wizard to become attuned to this item.

This stone has seven charges. As an action, you can expend a charge to cast one of the following spells contained in the staff:

• passwall

• move earth

If you expend the wand’s last charge, roll a d20. On a 1, the wand blackens and crumbles to dust, forever destroyed.

The wand regains 1d6 + 1 expended charges each day at dawn.