Horus Heresy book tierlist (excluding Siege of Terra
Credit to https://www.wargamer.com/horus-heresy/book-order#:~:text=Our%20guides%20to%20the%20Warhammer,Horus%20Heresy%20novels%20in%20order for the images.
Credit to https://www.wargamer.com/horus-heresy/book-order#:~:text=Our%20guides%20to%20the%20Warhammer,Horus%20Heresy%20novels%20in%20order for the images.