It would be neat to have a status effect called "blind" that could be inflicted on players and monsters alike.
The effect could cause the player or monster to miss completely sometimes (not all the time), or do partial damage.
For an element to do this status effect on, it would be cool to have the light element do so, like the light shards. As the green, blue, red, dark shards all have effects attached to them, be it freeze, shock, fire, poison, curse, even stun.