Dagger Storm

Numerous silver knives manifest and dart toward your target. The target must make a Dexterity saving throw or take 2d4 piercing damage on a failed save. Undead and Lycanthropes take an extra 1d6 radiant damage.

The spell creates more knives when you reach higher levels: enough for two attacks at 5th level, three attacks at 11th level, and four attacks at 17th level. You can direct the groups of knives at the same target or at different ones. 

Freeze Time: If this spell is cast while under the effects of a Time Stop spell, the effect is delayed until the Time Stop spell ends. If a creature is targeted more than once with this spell during the duration of a Time Stop spell, the targeted creature automatically fails the saving throw.