(referred to as "Big Daddy" by some reviewers) and the Sokar Pattern Stormbird. Campaign Missions
The Horus Heresy Book Five - Tempest is a massive, leather-bound campaign book released by Forge World. It chronicles the betrayal at Calth and the shadow war between the Ultramarines and the Word Bearers. Because the physical books are rare, expensive collector's items, many fans search for digital versions. Horus Heresy Book Five Tempest Pdf 39
Here's a brief summary:
Rules for the technological cult of Mars, adding depth to the battle of Calth's underground warfare. (referred to as "Big Daddy" by some reviewers)