The Nightbringer has long been one of my favourite GW models, and I've been dying for an excuse to buy him. Now that I'm playing Adeptus Mechanicus, and in our campaign I've been siding with the Necrons, this seemed the perfect time...
This is a very simple little conversion, just to get him finished & on the table as soon as possible. The shoulder pads were Space Marine tank crew, the axe head was a vintage techmarine's, and the backpack is a few Cities of Death bits (to match my Techno-Magi Lord).
Rules-wise he'll be a Daemon Prince when I'm running my guys as CSMs.
Also, have a preview of my Skitarii Assault Maniple, coming soon: