I don't remember what happened but I remember the story. I think I joined a group of magical assassins. I was a new member but already powerful. This group enhanced their power through gems. There were blue, green, magenta, red, and yellow. Me and two of the other members found out that, if we all hummed at a certain couple of tones, we could create a powerful spell that usually needed a rare artifact to produce. We were colleting people to be a part of the group. That's about all I remember. I remember that, at some point after the tone thing, we used some sort of machine to break open the crystals for a reason I can't remember. After broken the crystals were clear.