Up The Mountain

You’ve manifested some of the power of high elves as an underdark citizen. Since you studied the high elves for so long, you get the following benefits:

• Increase your Intelligence score by 1, to a maximum of 20.
• When you take damage from a creature that is within 20 feet of you, you can use your reaction to cast thunderclap. You can use this reaction a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.