Denna’s Distracting Disruption

As a reaction, the caster releases a distracting string of musical notes, either through vocals (a surprise falsetto) or instrumental (an impromptu guitar solo) to distract an attacker.

Roll 2d4 and subtract that from the targets attack roll or damage, attempting to make the target miss.

Upon casting at a higher level add an additional d4 per spell level. This caps at 5d4