Well it all depends on thier bonus's. You get a clan bonus for having 2 of them in play on the field so ideally you want a deck made up of 4 cards from 2 different clans. With that in mind choose 2 clans that fit your play style.
Clans that synce up in that one is a blocking clan, another is an offensive clan. Generally.
Although you cant go wrong with this deck.. Which is lame tbh.
Just remember though Nightmare depend on their life gaining ability's and stop opp ability crushes them , Uppers are a great choice one of the best defense bonuses and with cards like jackie and Dorian they can do great damage
The truth is using 2 clans is the best because you can put the 4 best cards from each clan in a deck.
There are absolutely no clans with 8 really good cards
And even if you use 2 clans, there is like 80% chance you'll get your bonus anyway.. (and if you don't get the bonus, you still end up with a very good card)
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