We are still working on rules, cards, and such so pages will be subject to change. Pages will become solidified on launch.
When building your deck remember that cards are strongest together! Look for synergies, familia boosts, and such things. Your deck should consist mainly of common cards scaling up to more rare cards.
Before the game starts players will choose which cards they would like to use to make the portal deck. Choosing cards which affect everyone can be a nice thing to do but it's recommended to add cards which help boost your deck!