Ying-Yang

Azari and Zane were as different as night and day-- she had blonde hair and sky blue eyes that went well with her paler complexion, while he had black hair, olive skin, and eyes so dark you couldn't see the pupils. 

Azari and Zane's parents were both Mindcasters, so of course, they were expected to have powers, too. 

Azari was afraid that if Zane had powers, then she wouldn't, because they were polar opposites. 

However, the Elder Mindcaster assured her that they both had equally strong powers flowing through their veins.

Now, there comes a day when every Mindcaster or anyone else who shows a manifestation of power must come before the Elder Mindcaster. 

Even though Azari and Zane's powers were not the power of the mindcasting and they had not manifested anything, everyone still knew the power was in them; so they came.

The Elder Mindcaster kindly and carefully instructed them on how to concentrate on manifesting their powers for the first time.

Since Zane, was oldest he went first; his powers were so overwhelming that the Elder Mindcaster drew back in utter fear and reverence.

Only Zane didn't stop there, and Azari knew he would destroy all the Mindcasters if she didn't do something--which meant using her abilities against her own brother.