Bag of Possibilities

Appearing as a Seafarer's bag, this item holds three weapons of the users choice in an extradimensional space. When the user wants one of the weapons, they use a bonus action to call out the set word and roll a d4. On a 1, the user retrieves the Rapier (1d8 slashing), on a 2, the trident (1d6 piercing), and on a 3 the Flintlock (2d8 fire). on a 4 the bag does not transform.