Dis Upbringing II

Ability Score Increase: Choose one ability score that does not benefit from an Ability Score Increase from a parentage. This score increases by 2.
Hellish Weapon: Starting at 3rd level, as a bonus action, you can imbue a weapon that you are currently holding with fiendish poison. For one minute, melee weapon attacks with the weapon deal an additional 1d6 poison damage. You must maintain concentration during that time, as if you were casting a spell. If you lose concentration or lose your grip on the weapon, the poison effect ends. Once you use this ability, you can’t use it again until you finish a short or long rest.
Languages: You are fluent in any one standard language and any one other language of your choice.