You have the ability to cause a small tear in your own timeline, granting you a chance to redistribute the arcane powers you have at hand.

You are able to exchange a number of prepared spells equal to the level of the spell slot you choose to consume during casting. For example, casting this spell at 4th level would enable you to exchange four 1st-level spells, two 2nd-level spells, one 4th-level spell or any variation thereupon. The highest level spell you can exchange is 6th level.