Answer:
Has feathers but can't fly. Rests on legs but can't walk.
A precious stone, as clear as diamond. Seek it out whilst the sun's near the horizon. Though you can walk on water with its power, Try to keep it, and it'll vanish within an hour.
It's in your hand though you can not feel it. Only you and time can reveal it.
I cut through evil like a double edged sword, and chaos flees at my approach. Balance I single-handedly upraise, through battles fought with heart and mind, instead of with my gaze.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
I will disappear every time you say my name.