Originally, Gwyllm kills Wilks and his deputies, then proceeds on to the mine; the gatekeeper sees him coming, enveloped in a bituminous aura.
Gwyllm kills Wilks proceeds on to the mine. This is then. This was originally. His deputies proceeds on to the mine. This is then. This was originally. The gatekeeper sees him coming. This was originally. Coming is enveloped in a bituminous aura.