A question for the hive mind

[la_marquise]

How many vikings are too many? Or, more accurately, how many viking attacks can you stand within one book? I need at least two, for plot reasons, but I don't want to be boring.

Comments

[http://users.livejournal.com/la_marquise_de_/]

That was my feeling -- they need t be different. I think I can do two.