

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.
Hudie Net Café BT23-100 C Hudie/CS While you have a Digimon or Tamer with the [CS] trait on the field, you can ignore this card's color requirements. [Main] <Draw 1>. Then, place this card in the battle area. [Main] <Delay> • You may play 1 Tamer card with the [CS] trait from your hand without paying the cost. --- [Security] You may play 1 level 3 Digimon card with the [CS] trait from your hand or trash without paying the cost. Then, place this card in the battle area.
Hudie Net Café BT23-100 C Hudie/CS While you have a Digimon or Tamer with the [CS] trait on the field, you can ignore this card's color requirements. [Main] <Draw 1>. Then, place this card in the battle area. [Main] <Delay> • You may play 1 Tamer card with the [CS] trait from your hand without paying the cost. --- [Security] You may play 1 level 3 Digimon card with the [CS] trait from your hand or trash without paying the cost. Then, place this card in the battle area.
Hudie Net Café BT23-100 C Hudie/CS While you have a Digimon or Tamer with the [CS] trait on the field, you can ignore this card's color requirements. [Main] <Draw 1> Then, place this card in the battle area. [Main] <Delay> • You may play 1 Tamer card with the [CS] trait from your hand without paying the cost. --- [Security] You may play 1 level 3 Digimon card with the [CS] trait from your hand or trash without paying the cost. Then, place this card in the battle area.
ネットカフェ• フーディエ BT23-100 C フーディエ/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】≪1ドロー≫。その後、このカードをバトルエリアに置く。 【メイン】≪ディレイ≫ • 自分の手札から、特徴に「CS」を持つテイマーカード1枚をコストを支払わずに登場できる。 --- 【セキュリティ】自分の手札/トラッシュから、特徴に「CS」を持つLv.3のデジモンカード1枚をコストを支払わずに登場できる。その後、このカードをバトルエリアに置く。