Glass Staff of Defense

"Clear as glass and strong as oak"
Requires attunement. While holding this staff,
you have a +1 bonus to AC. The staff has
10 charges ({c}) which can be expended using
an action to cast the following spells without components.
{c}: mage armor
{c}{c}: shield
The staff regains 1d6 + 4 charges each day at dawn. If you expend its final charge, roll a d20. On a 1, the
staff is destroyed.