AoS Allied battalions?

[Luke Argotti-Thomson]

I am wanting to start a sacrosanct army but would like to gradually include and play them with my seraphon as I paint them up. I wanted to start with a hailstorm battery battalion. Basically a Celestar ballista and a unit of castigators. It's under 400 points. Are there any restrictions on using battalions from other factions in the same grand alliance? Do I still get the command point? Can I give the artefact to a seraphon hero? Any help would be appreciated cheers

 

[Aginor]

The FAQ says:

Q: The rules say that a warscroll battalion can include allies
and that they don’t count against the number of allies in the
army. Does this rule only apply to battalions that share the
same allegiance as the army, but that have units from two
different factions (a battalion in a Daughters of Khaine army
that has Daughters of Khaine and Stormcast Eternals units,
for example)?
A: Yes. The faction a warscroll battalion belongs to is
shown on its warscroll, above the title of the battalion.
In addition, the battalion is assumed to belong to the
Grand Alliance that its faction is a part of. Warscroll
battalions that share the same allegiance as an army
can always be taken as part of the army, and if they
include any allied units, these units do not count against
the limits on the number of allies the army can have
(or against the points limit that can be spent on allies
in a Pitched Battle). An army can include a warscroll
battalion of a different allegiance to the rest of the
army, but if it does so the units in it do count against the
limits on the number of allies the army can have (and
the points for the battalion and the units in it count
against the points limit that can be spent on allies in a
Pitched Battle).

So..... yeah, you can probably use them. But I read that this is subject to change, and for another FAQ.

However, keep in mind that they cannot take artefacts, cannot profit from allegiance abilities, cannot be your general and cannot be battleline.