Ravenella's Techniques.

Umbrakinesis: The ability to manipulate darkness, and...the dark element in general.

Sapphire Manipulation: The ability to manipulate sapphires. These gems, however, are explosive and will blow up at Ravenella's command. She can shape the gems into most any form, and control them.

Ravens: The ravens are constructed out of her sapphire...thing, and then covered with darkness. Combining these two materials, Ravenella creates an extra strong explosive, which is a bitch to deal with... They explode at her command; but like Deidara, she can like, make a giant raven and fly on it...

Sapphire fire: A blue flame composed of Rowena's special sapphire stuff. However, unlike the solid gems, these ones FREEZE at her command instead of blowing up...yeah.

Water element: Rowena can use the water element, to an extent. Water manipulation is the newest thing she's learned, so she isn't mega-ultra-powerful in it...