Staff of the Mirage

This magical staff has 10 charges and regains 1d6 + 4 expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the staff vanishes and is lost.

Spells. You can use an action to expend 1 or more of the staff’s charges to cast one of the following spells from it, using your spell save DC. You gain a +2 bonus to your spell save DC when casting one of these spells from the staff: disguise self (1 charge), hallucinatory terrain (4 charges), invisibility (2 charges), mirror image (2 charges), mislead (5 charges), or silent image (1 charge).