Grimoire refers to the dreadnaught as 'the needle' (the worm and the needle grimoire) .. Orxy is killed by his sister for showing mercy while waging war..On board the needle/dreadnaught (dreadnought? His bigass ship..) .. His death there created his throne realm (grimoire weakness verse, don't ask me why and how.. Worm stuff I guess, space magic.. ) We did not enter his realm, We boarded his ship.. He was abolished from our realm and lost his body, he died just like he died when he was killed by his sister for the first time.. His essence or whatnot is now in his throne realm.. Waiting for resurrection.. and Oryx Worm is still out there too (it's a strange kind of symbiosis, the worms feed of every hives victim, and if a hive guy stopps killing, the worm will devour the hive guy and search for a stronger, better host..) It's been a while since I've read the grimoire, but it's in the first 10-15 books of sorrow