Richard Williams; The Animators Survival Kit was a brilliant helpful guide in animating and proved fantastic when I found a section solely dedicated to lifting and swinging a heavy object, which I practiced and used in my tests and then later into the animatic and animation, the guide is simplistic to read and provides so many helpful little tips that can improve an image dramtically.
I referenced this page for the movement of the scythe swinging on these images of a character swinging a hammer.















