You have a +1 bonus to attack and damage rolls made with this magic weapon.

Sword of Adding Insult to Injury - Once per round when you hit with an attack you the sword shouts out an insult (per the Viscious Mockery spell cast at first level). Spell DC save of 10.

IF you do not hit on the attack, the sword turns around and starts to insult you, which takes so long you lose your bonus action this round. 

Viscous mockery spell: You unleash a string of insults laced with subtle enchantments at a creature you can see within range. If the target can hear you (though it need not understand you), it must succeed on a Wisdom saving throw or take 1d4 psychic damage and have disadvantage on the next attack roll it makes before the end of its next turn.

A yklwa (pronounced YICK-ul-wah) is a simple melee weapon that is the traditional weapon of Chultan warriors. A yklwa consists of a 3-foot wooden shaft with a steel or stone blade up to 18 inches long. It costs 1 gp, and it deals 1d8 piercing damage on a hit. Although it has the thrown weapon property, the yklwa is not well balanced for throwing (range 10/30 ft.).

Notes: Bonus: Magic, Damage, Combat, Thrown