Blizzardly Backwards Balestra

You brandish the weapon used in the spell’s casting and make a melee attack with it against one creature within 5 feet of you. On a hit, the target suffers the weapon attack’s normal effects and then you leap backwards with a flash of distracting snowflakes, moving up to 5 feet away from the target without triggering opportunity attacks. The weapon also becomes magical, if it isn't already.

This spell’s damage and your movement increase when you reach certain levels. At 5th level, the melee attack deals an extra 1d8 cold damage to the target on a hit, and your movement increases to up to 10 feet. Movement increases by 5 feet and the damage roll increases by 1d8 at 11th level (2d8 and up to 15 feet) and again at 17th level (3d8 and up to 20 feet).