[Cardfight!! Vanguard] Regarding Declare and Reveal

This is from the CotD page via the Japanese official site. I've copied the text in Japanese and translated it for you guys.

【テキスト内キーワード】「宣言」について
カード名を宣言する場合、正式名称を宣言することが望ましいですが、正式名称を忘れてしまった場合は
対戦相手とコミュニケーションを取って、お互いが特定のひとつのカードを認識した後、能力を解決してください。

Translation:
When you Declare a card name, it is preferable to Declare the official name. In the situation if you have forgotten the official name, please discuss and describe the details (of the card) with your opponent; once both players agree to the details, you may then continue resolving the ability.


【テキスト内キーワード】「公開」について
公開されたカードは、お互いのファイターが確認する事が出来ます。
公開されたカードが山札の上にある場合は、そのまま裏向きに戻し、能力の解決を終了します。
原則として、表のまま山札に残ったり、山札をシャッフルすることはありません。

Translation:
Both players may confirmed the Revealed card. If the Revealed card is from the top of your deck, put the card back to the top deck of your, facing down and end the check timing (resolving the ability). As a (general) rule, the card cannot be left face up on/in the deck and you may not shuffle the deck.

imo, even with BSR allowing players to describe a card in general for Declare, one should try to remember the cards' actual name, be it Japanese, English, or Korean. Agreeing on just details is not really reliable - the opponent might claim it's another card that the player is Declaring, even though it's not in his/her intention, and it'll just drag on. Therefore, just try to memorize the cards' name in the language you and your opponent are familiar in. If both parties are in doubt, just get a judge before Declare and Reveal.


/update: for those who are still confused with the steps:

Battle Phase ▶ Start Step ▶ Attack Step ▶ Resolve Check Timing (Declare ▷ Reveal ▷ set card back to the top of deck unless stated otherwise ▷ ability resolve) ▶ Guard Step ▶ Drive Step ▶ Damage Step ▶ Close Step