Branding Blade

     As a part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spells range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects and it is subject to a glowing brand until the end of your next turn. The next time the branded creature makes an attack or casts a spell targeting a creature other than you, that creature takes 1d8 force damage and the brand is consumed. 
     This spell’s damage increases when you reach higher levels. At 5th level, the melee attack deals an extra 1d8 force damage to the target, and the damage the target takes for targeting creatures other than you increases by 1d8. Both damage rolls increase by 1d8 at 11th level and 17th level.