Your body surges with elemental swiftness. Until the spell ends, your movement speed increases by 15 feet, and you have advantage on saving throws against being paralyzed or restrained. You can move through difficult terrain without expending extra movement.   Additionally, once during the duration, you may choose to become incorporeal until the end of your turn, allowing you to move through creatures and objects as if they were difficult terrain. If you end your turn inside a creature or object, you are pushed to the nearest unoccupied space and take 1d10 force damage.