Credit: Yours Truly (I don't take commissions)

Made by the legendary Decimus, Son of Ath, this pure golden wristband with six gems, each of a different color, can be used to bestow amazing powers upon anyone attuned to it.

The attuned creature that wears the wristband can use its action or bonus action to use its amazing power. Choose one class feature, spell or a racial trait that you have access to. All numbers said in that class feature that are not the dice or level at which it is gained are multiplied tenfold for the next one hour. For example, multiplying the fighter's Archery Fighting Style grants you a +20 bonus to attack rolls you make with ranged weapons.

This glove has six charges. With each charge used, one of the gemstones goes black. It regains all six charges seven days after using the first charge.