This is the leader of my Nurgle war-band, a Chaos Lord/ Sorcerer. It's based on FW's Gal Vorbak. the model is huge. The same height as a Primarch.
The only convert done on this model, was a simple arm-switch. I gave him the arms, and scythe from one of the Maggoth Lords. The flies was added the same way as on the Plague Marines.