When not specified, the following rules applies to choose your army.
Maximum Points: 1850pts
Detachments:
Maximum Number: Unlimited
Limitation: None except that Apocalypse Formation, Adamantine Lance Formation can not be used.
Unbound Army can neither be used.
Lord of War can be used if they represent less than 25% of your army.
Army sources:
You can not use any of the following armies:
Space Marines Chapters & their descendant chapters: Ultramarine, White Scars, Raven Guard, Imperial Fist (including Sentinels of Terra) , Salamanders, Red Scorpions, Carcharodons, Raptors, Executioners, Mantis Warriors, Red Hunters, Star Phantoms, Fire Hawks, Astral Claws (included Tyrant's Legion), Dark Angels
Chaos Space Marines Legions: Black Legion, Crimson Slaughter, Cypher, Old Renegades and Heretics (Imperial Armour 5,6 & 7) are outdated.
Astra Militarum Regiments: Elysian Drop Troops, Tallarn Regiments
Others: Mephrit Dynasty, Farsight Enclave, Craftworld Iyanden
You can use any other sources:
note that: Armoured Battle Group, Space Marine Siege Assault, Ork Dread Mob can be used.
Ally:
Depending of your Primary Detachment, you can add formation or detachment from the following allies faction.
The following syntax will be used:
Player
Primary Detachment Faction: Ally Faction 1, Ally Faction 2, Ally Faction 3, etc
Nico
Space Marines Minotaurs: None
Space Wolves: None
Melaic:
Inquisition: Grey Knight, Imperial Knight, Assassin
V2:
Black Templars: None
Chaos Space Marine: Daemons, Renegades and Heretics
Tyranids: To be defined...
Gateau:
Adepta Sororitas: Inquisition, Assassin
Eldar: Harlequin, Eldar Corsairs
Aldo:
Necron: Maynarkh Dynasty
Maynarkh Dynasty: Necron
Angel Revenant (As Blood Angels): + Necron Illuminor Szeras as a Mandatory HQ (Mechanical Augmentation can target any Space Marine)
Totoro:
Chaos Space Marine: Daemons, Renegades and Heretics
Renegades and Heretics: Chaos Space Marine, Daemons
Crasnier:
Dark Eldar: Harlequins, Eldar Corsairs
Salada:
Tau: None
D4:
Ork: None
Death Korps of Krieg: Astra Militarum
Astra Militarum: Death Korps of Krieg
Yoann:
Daemon: Renegades and Heretics, Chaos Space Marine