

Q1: What does "while you have (the specified card) on the field" mean, exactly?
It refers to when you have the specified card in the battle area or breeding area.
Crescent Leaf BT23-095 C CS While you have a Digimon or Tamer with the [CS] trait on the field, you can ignore this card's color requirements. [Main] Return 1 of your opponent's suspended Digimon to the bottom of the deck. Then, place this card in the battle area. [Your Turn] When one of your [CS] trait Digimon attacks, <Delay> • Return 1 of your opponent's suspended Digimon to the bottom of the deck. --- [Security] Return 1 of your opponent's suspended Digimon to the bottom of the deck. Then, place this card in the battle area.
Crescent Leaf BT23-095 C CS While you have a Digimon or Tamer with the [CS] trait on the field, you can ignore this card's color requirements. [Main] Return 1 of your opponent's suspended Digimon to the bottom of the deck. Then, place this card in the battle area. [Your Turn] When one of your [CS] trait Digimon attacks, <Delay> • Return 1 of your opponent's suspended Digimon to the bottom of the deck. --- [Security] Return 1 of your opponent's suspended Digimon to the bottom of the deck. Then, place this card in the battle area.
Crescent Leaf BT23-095 C CS While you have a Digimon or Tamer with the [CS] trait on the field, you can ignore this card's color requirements. [Main] Return 1 of your opponent's suspended Digimon to the bottom of the deck. Then, place this card in the battle area. [Your Turn] When one of your [CS] trait Digimon attacks, <Delay> • Return 1 of your opponent's suspended Digimon to the bottom of the deck. --- [Security] Return 1 of your opponent's suspended Digimon to the bottom of the deck. Then, place this card in the battle area.
クレセントリーフ BT23-095 C CS エリアに特徴に「CS」を持つ自分のデジモン/テイマーがいる間、このカードは色条件を無視できる。 【メイン】レスト状態の相手のデジモン1体をデッキの下に戻す。その後、このカードをバトルエリアに置く。 【自分のターン】特徴に「CS」を持つ自分のデジモンがアタックしたとき、≪ディレイ≫。 • レスト状態の相手のデジモン1体をデッキの下に戻す。 --- 【セキュリティ】レスト状態の相手のデジモン1体をデッキの下に戻す。その後、このカードをバトルエリアに置く。