You fall at accelerated speed, land on your feet and send the destructive energy of the impact outwards, taking no damage from the fall.

When you land you send out a shockwave of energy. Any creature in the space you land and creatures within a 5 feet radius of the space you land must make a Dexterity saving throw or take 1d6 points of thunder damage per 10 feet you fell (maximum 10d6), or half as much on a successful saving throw. Any creature in the space you land, have disadvantage on this saving throw.

At Higher Level. When you cast this spell using a spell slot of 4th level or higher, the radius of the shockwave increases by 5 feet, and the maximum damage increases by 2d6 for each slot level above 3rd (to a maximum of 20d6). If you cast this spell at 9th level, the radius of the blast becomes 60 feet and all creatures who fail their saving throw are also pushed 15 feet away from you and knocked prone regardless of size.