With the starter arriving soon, let’s check out the top 4 rules changes coming to Horus Heresy with the new edition!
We’ve been seeing leaks for a couple of months now and GW has actually confirmed a lot of the rules as well, so we have a pretty good idea of what to expect with the edition. They are keeping some of the stuff the same, but also changing up a decent amount of the rules.
Warhammer Community posted an article with some of the big changes, but we also have all the leaks to go along with them as well! Let’s check out what’s changing!
Rules Changes Coming to Horus Heresy: #1 Reactions
The battlefields of the Horus Heresy are a fast-paced frenzy of back-and-forth fighting. This is represented by Reactions, which allow players to respond to – and hopefully, thwart – the enemy’s plans, even when it’s not their turn. You can make one Reaction during each Phase of your opponent’s turn – though specific special rules can give you extra Reactions, up to a limit of three per Phase.
There are six Core Reactions, available to everyone and anyone, which are divided up by Phase.
They only showed Advance, but below we have all the core reactions:

Both Hold the Line and Overwatch are also pretty strong, so reactions will play quite the big role in the new edition! However, we also know how they will work in the game:


#2 Tougher Elites and Dreadnoughts
The Age of Darkness saw the 18 Legions deploy some of the most devastating weapons the Imperium had ever developed – so it’s no surprise they also donned the mightiest armour available. Legion Veterans, Terminators of all flavours, and certain Legion-specific Elites now sport two Wounds to represent their robustness in the face of withering fire.Â
Dreadnoughts moving to wounds is a big thing, and most of the elite units we’ve seen also have more wounds. Plus, the Dreadnought above is actually not the one in the starter, and we’ve got some more info on how the kit will most likely work.

Click Here To Get Your Eternus Assault Armor!

So besides those chest bits, on the same sprue could be all the extra weapons that don’t come in the original box (like the Kheres Assault Cannon pictured), thus either making you buy a new kit to get all the upgrades or maybe later they will release just the upgrade sprue itself.
Here’s a look at the sprue to see the actual differences via GW influencer Tale of Painters

Some people were wondering if it’s just the one from the Calth box, however, the chest looks different, the knees aren’t right, and neither are the angles. Not to mention the old one is monopose.
#3 Universal Special Rules Updates
Each unit in the Horus Heresy has access to a range of weapons, wargear, and innate abilities. To make it easy to understand these varied traits, the Age of Darkness Rulebook contains a full list of universal Special Rules you can reference in the heat of battle.
Some have been overhauled and rebalanced, but a key change comes from the added granularity afforded by a suffix value. Older rules such as Bulky, Very Bulky, and Extremely Bulky are now simply to Bulky (2), Bulky (3), and Bulky (5). This simple tweak makes it much easier to work out how many Terminators you can squeeze into your Spartan Assault Tank.
We’ve actually seen a ton of rules on how vehicles will work, which you can check out below:


Rules Changes Horus Heresy: #4 A Whole Lot More
That isn’t everything – Deep Strike is changing, Transport Capacity has been tweaked, and the Psychic Phase is gone entirely! Rules have been tweaked in every phase of the game, to streamline where helpful and add complexity where needed. This isn’t your dad’s Heresy! …it’s Horus’s Heresy. We assumed that was clear.
While the Psychic Phase is gone, there are now just psychic tests for everything:

Here’s the most up-to-date list of new Horus Heresy Rules & Product Leaks. Click on the gallery above to see new Horus Heresy models and rules rumors!
- 4 New Plastic Horus Heresy Starter Box Sets
- All the Horus Heresy New Models & Rules
- Horus Heresy Legion Rules
- Horus Heresy Weapon & Unit Rules
All the Newest GW Model & Rules Previews
What do you think about all the changes?
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