Bearings of Memory

Wondrous Item (ball bearings), legendary (requires attunement by a spellcaster)

This bag of ball bearings seems to shift and clack on its own. When you touch one, your mind is filled with visions of beautiful women and the trappings of wealth from a bygone era.

Ball Bearings

As an action, you can spill 1000 tiny metal balls from this pouch to cover a level, square area that is 10 feet on a side. A creature moving across the covered area must succeed on a DC 15 Dexterity saving throw or fall prone. A creature moving through the area at half speed doesn't need to make the save. You can do this once per hour.

Charges

This bag has 7 special balls and makes 1d6+1 at dawn. You can eat the below numbers as an action.

Rememorize (1 Charge)

You forget one spell you have prepared and prepare another instead.

Borrow Memory (2 Charges)

You cast the spell Borrowed Knowledge, calling the spirit of an ancient businessman.

Steal Memory (3 Charges, DC 15)

You cast Modify Memory. If you wish, instead of the normal effects, you can attempt to make a caster forget a spell you know they have.