 However, he overreaches with his powers and damages the vital and secret project the Emperor is undertaking (Book 1), endangering the safety of Terra itself in the process.The Emperor is enraged and orders Leman Russ, Primarch of the 6th Legion (the "Space Wolves"), to , the Thousand Sons Legion's in‑series home world.The Space Wolves, accompanied by other Imperial forces, are to bring Magnus and his Legion to Terra to account for themselves.