Striking Mark

Evocation Cantrip

Casting Time: 1 action

Range: 60 feet

Components: V, S

Duration: 1 round

You mark a creature within range for others to strike it, the first time a creature hits the marked before the start of your next turn, the creature will take an extra 1d4 force damage. 

The spell's damage increases by one die when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4)