Many Forge Worlds build their own variants of the STC Shadowsword design, armed with different weapons. It is believed the Stormblade, mounting a massive Plasma Blastgun to replace the Shadowsword’s Volcano cannon, was first constructed on Ryza, where the ancient art of plasma weaponry construction are still remembered and practiced.
As well as its main weapon the Stormblade is also armed with turret mounted lascannons and sponson mounted heavy bolters, making it a fearsome opponent.
From the Forgeworld displays at GamesDay 2006.