The Family Dagger.

I'm only going to have one weapon and one weapon only; The family dagger. Its name is Null. It's your ordinary dagger, slightly longer than the norm, however. While I'm holding it, I can concentrate my Natural Energies within it to enhance it, like I can my body. This is the weapon of my family, and so their power is embedded within it. Whenever the family wants to help me, Null will gleam and change color from green to clear.