Your Intelligence score increases by 2 and your Constitution score increases by 1,

The curse sets in between the ages of 12 and 15. Otherwise, the Curst mature at the same rate as humans, until middle age, when their aging slows down, leading to a long life after their prime of up to one and a half centuries. 

The horrible weight of the Curse keeps most Curst from being overly concerned with ethics. They have a tendency towards non-good alignments.

The Curst are on the shorter end of the typical human height range, between under 5 feet to slightly over 5 and a half feet tall. Your size is medium. 

You base walking speed is 30 feet.

You are immune to all curses, including the spells hex and bestow curse and any effect which can be ended with the assistance of a remove curse spell. 

Choose a curse from the list below. 

Airheaded: Your curse has rendered you unobservant and highly impressionable. Your Wisdom score decreases by 2 and cannot be increased above 18. You have disadvantage on Wisdom checks and saving throws. However, your Charisma score increases by 1 and you gain proficiency with the Persuasion skill.

Amnesiac: Your curse has damaged your mind and your memory isn’t what it once was. Your Intelligence score decreases by 4 and cannot be increased above 18. You have disadvantage on Intelligence checks and saving throws. However, one ability score of your choice increases by 2 and you have advantage on all Wisdom and Charisma saving throws.

Forever Young: Your curse prevents you from aging. You appear to be a child of your species physically, although your lifespan remains the same. Your Strength score decreases by 2 and cannot be increased above 18. You have disadvantage on Strength checks and saving throws. Your size is small and your movement speed lowers to 25 ft. However, your Dexterity increases by 1 and you gain proficiency with the Sleight of Hand and Stealth skills.

Lamed: Your curse has wracked your body with such trauma that you are permanently lamed. You walk with a limp and other forms of movement are equally difficult. Your Dexterity score decreases by 2 and cannot be increased above 18. You have disadvantage on Dexterity checks and saving throws. Your movement speed lowers to 20 ft. However, your Constitution increases by 1, you gain advantage on Constitution saving throws, and you are immune to magical pain effects.

Wallflower: Your curse has rendered you easily overlooked and unskilled in social situations. Your Charisma score decreases by 2 and cannot be increased above 18. You have disadvantage on Charisma checks and saving throws. However, you gain proficiency in the Stealth skill and you are ignored in combat until you take your first action.

Wasting: Your curse afflicts your body with a nonlethal, non-contagious, incurable disease that causes pain and makes it seem as though you are wasting away. Your Constitution score decreases by 3 and cannot be increased above 18. You have disadvantage on Constitution checks and saving throws. However, one ability score of your choice increases by 1 and gain proficiency in the Insight, Medicine, and Survival skills.

You can speak, read, and write Common and one extra language of your choice.