War sounds like something that would stand by itself well.

Would a god with the domain of monsters and fear be okay?

<Snipped quote by ArenaSnow>

Aye, it could stand well by itself depending on what exactly you wanted and how you interpreted it.

If I did go with it, I might add a few smaller domains such as 'Combat' 'Battlelust' or 'Honor'. Depends on if I wanted a more darkly aligned War God or a more Honorable one.

If I went with just 'War' I'd probably make the more...trickster-ish? Like, they wouldn't participate in battles or war themselves, they'd just take whatever means to incite it between different peoples.

Some gents are more inclined to dedicate if they see more to invest in. Something like a CS would bring some lurkers from the shadows, which, given the people who have already expressed interest, doesn't seem unreasonable to invest in making.