A bone scepter with a purplish-pink gem on its end.

This scepter has 3 charges, which replenish each day at dawn. As an action you can expend one charge to cast Cloud Mind at 2nd level from it, with a spell save DC of 12, or your own spell save DC (whichever is higher). Cloud Mind is a homebrew spell with the following attributes: 

Cloud Mind is a 2nd level enchantment spell with a range of 60 feet and a duration of 1 minute. It requires vocal and somatic components to cast.

Choose a target that you can see within range. For the duration, whenever that creature tries to cast a spell, it must make a Wisdom saving throw. On a success, the creature casts the spell normally, and the spell ends on the target. On a failure, the creature's spell fails and has no effect, but the creature does not expend a spell slot. The creature can only make the saving throw if it attempts to cast a spell.