Usually in Crystal Clans, your deck is what it is. You buy it, you play it. But just recently, they came out with rules for building your own deck. Want to mix clans? Create new power couples? Try different combos. The sky's the limit.
From the post:
These deck building rules will show you how to combine Crystal Clans cards of
different factions into a brand new faction of your design. Please remember to
always be polite and let your opponent know that you are playing with these rules, so that they may customize a deck as well.
Each deck must contain exactly three hero cards and twenty-four non-hero cards,
and each card in that deck must have the same deck building symbol on it.
For example, these three heroes can be in the same deck since they share the