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There is a more recent incarnation of this information at Rules in Card Form.
No less than 60 cards
No more than 4 of each card
Except for ”~type~ Temple”, which is unlimited
A card is identical if the name is exactly the same
Cards in different languages count as the same card
Cards with different art are considered the same card
Cards with different statistics and effects, but the same name are considered the same card
Cards with non-identical backs must be in sleeves
Cards with no backs must also be in sleeves
Cards printed on paper not thick enough to conceal the front faces must also be in sleeves
Players must sufficiently randomize their decks
All players must decide on a number of Faith Points to play to
If an agreement cannot be reached, players must flip a coin. If heads, play ends at 15. If tails, play ends at 30.
Players must decide on who goes first, and order of play.
The official way is for each player to roll a twenty-sided die.
The player with the highest roll may opt to go first or last.
The player with the highest roll may then choose a direction for play to continue, either to the player left of them or the player to the right of them.
Play continues in that direction for the duration of the game.
The player who takes the game's very first turn does not draw a card at the beginning of that turn
Other ways are flipping coins and cutting decks
Capitalization
Just a few words that should be Capitalized Every Time
Follower
Type
Spirit
Offense
Health
Cost
Faith
Player
Temple
Faith Points
Spirit Cost
Sub-Type
Combat
Some groups of words that should always be in Title Caps.
All the Elements.
All Type Text
All Keywords
All Name Text
All information delimiters in Spoilertext (“Creator:”, “Name:”, etc.)
All type text inside Card Text.