Q&A:
Q: How do I declare an element?
A: Add it to your chat nickname prior to the tournament using the command /nick. For example, a player named Bobby might type /nick Bobby-water.
Q: Could you be more specific about what is meant by 'at least 6 copies'?
A: This means you have to use 6 or more copies, total, of the 2 cards given for your declared element in each deck. You don't have to use 6 of both. You may use 6 copies of one card given for your element, 6 copies of the other, 3+ copies of both, or any other combination totaling 6 copies or higher.