I'm wondering how possible it would be to play Warhammer 40K without a Codex or a Rulebook. I played rather frequently back in 5th edition, and the core mechanics of the game haven't changed, so basically I just need to know a few of the fiddly bits (like the new psychic phase) and how all the various keywords (like Feel No Pain) work nowadays. I think I can manage this with two tools, both of