Weapon (any), common
” Ho! you have been broadswords? but i have this amazing katana. But literally the best thing ever happened. However if it had a mouth then it would eat all of your swords for its breakfast. Here i would show you but i still need to praise this stu- i mean, glorious death machine for another five minutes. ” — An unfortunate adventurer cornered by bandits.
Because of you are wielding of this particular magic weapon, whenever you make the charisma (Performance) check for impress an audience with the anecdotes of battles you won with the weapon. Of course you have been considered the proficient in a Performance skill and you would be added double of your proficiency bonus to the check, but instead of your normal proficiency bonus.
Curse: Here a boastful weapon can only deal one bludgeoning damage instead of its normal damage unless until you do praise how superior a weapon is compared for all other weapons no matter what type it is. The flattering a boastful weapon could be required the successful DC 15 Charisma (Persuasion) check, and of course this attempt should be made during the hostile creatures able to see and hear you. Here a flattered boastful weapon deals its normal damage until unless the wielder finishes a short rest.