Bless Crossbow

When cast, this spell removed the losing property from the crossbow, magically loading ammunition after every shot.
The bearer may make 1 additional attack a round as a bonus action.

At 5th level, this spell makes the crossbow a +1 to hit

At 11th level, the spell makes the crossbow +1 to damage along with the previous +1 to hit

At 17th level, the bearer may take 1 additional attack as a bonus action