Hydra Cordatus

Hydra Cordatus is a forge world on the Eye's doorstep and one of the few vaults that stored Imperial Fists gene-seed. Perturabo cracked the Cadmean Citadel in the Heresy. A later Iron Warriors warsmith, with Forrix, Kroeger, and Honsou, took the remaining seed, earned daemonhood, and left Honsou to finish the survivors.