Well one of the LGS is doing a Slow Grow League for Horus Heresy 3.0 and well I think My XIXth Legion will be getting the call.  Here are the details.

Horus Heresy 3.0 Slow Grow Campaign

The Tarkath Front – War for the Galcoran Reach

Duration:: August 2nd 2025 - January 31st 2026

Starting Points: 500 pts

Monthly Growth: +500 pts per month (up to 3,000 pts by January)

Entry Fee: $30 (free if you purchased the Saturnine box)

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The fires of Istvaan spread unchecked, and now the Galcoran Reach burns. Word of Horus’ betrayal has reached this distant sector in the galactic north, now caught behind the Warmaster’s inexorable advance toward Terra. Ill-prepared for rebellion, the Reach erupts into chaos as warlords, forge-priests, and rogue commanders gather their strength in the Tarkath Sub-Sector, the industrial heart of the region and its last hope for resistance or domination.

Campaign Structure

Players are divided into two factions:

• Loyalists
•  Traitors

Teams must remain balanced, so please let us know if you’re flexible on which side you’d like to play.

Each month represents a new battlefront in the Tarkath Sub-Sector of the Galcoran Reach, with:

•  A unique star system
• A custom mission
• Special campaign rules

Pairings and mission packets are released on the first weekend of each month.

Lists are updated monthly; new 500pt increments must be submitted by the end of the first weekend each month.

List Writing Restrictions

• No Characters with the Unique Special Rules
• Your first 500pt list MUST contain a High Command Unit

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How to Score Points

Each month you can earn up to 3 points for your team:

• Fully paint this month’s 500pts
• Win your monthly game
• Add to your army’s story with a short passage of written lore

Lore passages should be 1–3 paragraphs describing your battle, your commander, or your force’s actions that week. All points contribute to your team’s total to determine control of the current system at the end of the month.

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Monthly Outcomes and Finale

• The faction with the most points at the end of each month wins control of that system.
• Victorious factions gain a small strategic bonus for future games.
• The campaign will culminate in a massive Apocalypse-scale battle to decide the fate of the Tarkath Sub-Sector.

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T-Shirt and Campaign Materials

• Entry fee goes toward a custom campaign T-shirt.
• Please send your preferred shirt size to =]Redacted by Order of the Holy Inquisition[= on Discord.

So I am working on a 500 pt list and well it is going. One of the issues is The High Command Model, and that it stays in the list.  

WIP Praetor

He's 170 pts...Corvid Jump Pack and a pair of Ravens Talons.  Which means I need an Assault squad and a Dark Fury Squad (too many points for 1st month)