Light is blinding. Blinded creatures tend to lash out randomly. Change card name to Blind or Befuddle.
Alternative route: Light is good. Showing a creature the right path would make it defect to your side. Change card name to Enlighten or Turn.
The elements' themes are soft and malleable. With some effort, you can make anything fit.
Hmm, makes sense, Light could work.
But, I kind of had an idea for a Light hard CC card (I know that this one is ,in theory, very dangerous CC, but not like "boom" and creatures die), since Light really needs some form of definite CC, not just for Darkness and Death.
EDIT: Okay, I'm using your idea for Light, I might change the names a little bit, but yeah.. thanks!
Is the card itself good though? Is the cost reasonable and the effect worth using? Should I increase the chance of attacking creatures, maybe to 50%?
This is what I have now, you can suggest some better names, I just wanted to show that its a blinding blast of light (and unfortunately, Blind and Befuddle do not show that..
oh well..). And I decided that it should only be to attack ally creatures, not creatures and owner. Is it good so far?