Gambler

Your itch for high-stakes speculation grants you the following benefits:

• Increase your Intelligence or Charisma score by 1, to a maximum of 20.
• You gain proficiency in three types of gaming sets of your choice.
• When you roll initiative, you can choose a number between 2 and 19 as your lucky number. Once per combat when you make an attack roll and the roll on the d20 equals your lucky number, you can cash it in, turning the roll into a critical hit. Add the ability modifier of the score increased by this feat to the damage of the attack. If initiative ends and your lucky number did not appear, you take psychic damage equal to your level, and you cannot choose that number again until you finish long rest.