Welcome to Librarium Online!
I'm going to be starting an ork army soon, and my goal is to make as much of it as possible looted/stolen/enslaved.
Here's a rough approximation of the list, in the terms expressed by the codex:
Warboss on bike
Mek with KFF
20 boyz w/ klaw nob (x3)
Rokkit wartrak (x2)
Battlewagon w/ deff rolla (x3)
Currently planned conversions:
Warboss - looted bloodcrusher of Khorne (open to alternatives)
Mek (no conversion)
Lootas - various looted heavy weapons (would like to make sure I use an IG weapons team and a SM heavy bolter, as those models are awesome)
Deff dread - looted carnifex, some kind of wires going into it's head and attached to a painboy (meks loot vehicles, painboys loot organics... right? )
Grots - slaves of other races' weak units (mostly IG?), probably mixed in with some actual grots for good measure
Boyz - no conversions, maybe a few bits here and there
Rokkit wartraks - not sure on this one, was thinking maybe SM attack bikes, could definitely use some input here
Battlewagons - 1 looted/customized land raider, 1 looted necron ghost ark, 1 ???
My biggest concerns right now are how the heck to mount a deff rolla on a ghost ark and what to use as the third battlewagon.
I've never actually assembled a ghost ark before, but my plan was to keep the model pretty much as-is and just give it an orky paintjob and have some boyz standing around inside instead of the crossed-arm necrons.