The Anti Assault Forgeworld, the Agripinaa get a bonus to overwatch and have a fresh convert rule, bringing in a last minute squad to replace another.
via Warhammer Community
https://www.warhammer-community.com/2017/09/15/forge-world-focus-agripinaa-sep15gw-homepage-post-4/
Forge World Focus: Agripinaa
One of the most exciting features of the new Adeptus Mechanicus codex is rules for seven different forge worlds, allowing you to customise your collection more than ever before with powerful and thematic new abilities. This week, we’ll be previewing what the forge world rules mean for your army in our daily previews of Codex: Adeptus Mechanicus in advance of the pre-order tomorrow:
Being situated right next to the Eye of Terror would, for most factions in the 41st Millennium, be seen as a death sentence, but Agripinaa stands firm even with Cadia destroyed. The warriors of Agripinaa are dauntless, famed for their expertise in defensive warfare. Perhaps more ominously, Agripinaa is known for the ferocious rate at which it produces Servitors, expending them with a ruthless lack of remorse and never short of new raw material thanks to “volunteers” from the unfortunate refugee vessels that orbit the world following the fall of Cadia.
On the tabletop, Agripinaa armies possess a forge world dogma that’ll make any melee army think twice about charging you:
Staunch Defenders means your overwatch attacks will always hit on a 5+, effectively doubling its effectiveness! Nearly all Adeptus Mechanicus units possess some form of shooting attack, and this trait means they’ll be able to take full advantage of it even when charged.
Best Units
Kataphron Destroyers are superb in a Agripinaa army; you’ll be dealing damage in overwatch with both your Cognis flamer and your primary weaponry.
Where Agripinaa Kataphron Destroyers really come into their own is in conjunction with Fresh Converts:
Does it look like your Destroyers are in trouble? Simply replace them with some new ones, positioned for a last-minute grab for the objective, or in a more optimal firing position.
The Onager Dunecrawler with an Icarus Array is also a great option for an Agripinaa army. The Icarus Array has a number of high-damage shooting attacks that can all be fired simultaneously, which should significantly discourage any assault units looking to cripple your anti-air capabilities.
If you’re want to make life difficult for melee armies (or just fancy drowning your enemies in servitors) then dedicate your Adeptus Mechanicus army to Agripinaa. Come back tomorrow, when we’ll be looking at Stygies V, a forge world so secretive and sinister they make the rest of the Adeptus Mechanicus look open and welcoming.