Welcome to Librarium Online!
ok guys im a Necron player thats still fairly new and i know that if u have a Monolith on the field that u can reroll ur WBB rolls, but i cant find the exact rule in the codex little help here. page # or a direct typed rule would realy help =)
Necron codex page 21 last paragraph it is in that area.
Prey they don't take you alive