Their Heads, A Frozen Crown

You summon a circle of 3 icy knives, circling around the head of the target. As an action, you can force the knives to drive into the head of the enemy, dealing 1d4 Cold damage per dagger you chose to attack the target. You can choose any number of the currently summoned daggers to attack the target.

In addition, if the target moves, they are automatically hit by all the daggers surrounding them. If the target makes a Dexterity saving throw while this spell is in effect, they can choose to have disadvantage on the save in order to avoid being struck by the daggers. If they do not choose to have disadvantage, then making the Dexterity saving throw automatically triggers being hit by any summoned daggers.

At Higher Levels: Casting this spell at 3rd level increases the number of daggers by 2, with each additional level of the spell adding a further 2 daggers.