

Q1: What kind of card does "a card with X in its text" refer to?
It refers to a card that contains the specified text or icon in its name, traits, effects, inherited effects, (Rule), digivolve requirements, DNA Digivolve, DigiXros requirements, Burst Digivolve, App Fusion, Link, or Assembly requirements. For example, "a card with Knightmon in its text" would include cards with the name DarkKnightmon and cards with the text Knightmon in their effects.
Q2: There are two copies of this card in the battle area. Can I activate both of their Main effects and play one specified card with its cost reduced by the combined amount from both effects?
No, you can't. You can't simultaneously activate multiple effects that play a card.
Q3: If a Digimon with the effect "Players can't reduce play costs," such as ST12-03 Solarmon, is in the battle area, can I activate this card's Main effect and play a specified card?
You can activate it and play the card, but the cost will not be reduced.
Q4: If a Digimon with the effect "players can't play Digimon by effects," such as BT9-047 Pomumon, is in the battle area, can I activate this card's Main effect and play a specified Digimon card?
You can activate it, but the card can't be played.
Kosuke Misono BT26-096 U TS [Start of Your Turn] If you have 2 or less memory, set it to 3. [Main] By returning this Tamer to the bottom of the deck, you may play 1 Digimon card with [Chronomon] in its text or 1 Tamer card with the [TS] trait from your hand or trash with the cost reduced by 2. --- [Security] Play this card without paying the cost.
Kosuke Misono BT26-096 U TS [Start of Your Turn] If you have 2 or less memory, set it to 3. [Main] By returning this Tamer to the bottom of the deck, you may play 1 Digimon card with [Chronomon] in its text or 1 Tamer card with the [TS] trait from your hand or trash with the cost reduced by 2. --- [Security] Play this card without paying the cost.
Kosuke Misono BT26-096 U TS [Start of Your Turn] If you have 2 or less memory, set it to 3. [Main] By returning this Tamer to the bottom of the deck, you may play 1 Digimon card with [Chronomon] in its text or 1 Tamer card with the [TS] trait from your hand or trash with the cost reduced by 2. --- [Security] Play this card without paying the cost.
御園公介 BT26-096 U TS 【自分のターン開始時】メモリーが2以下なら、3にする。 【メイン】このテイマーをデッキの下に戻すことで、自分の手札/トラッシュから、「クロノモン」の記述があるデジモンカードか特徴「TS」を持つテイマーカード1枚を支払うコスト-2で登場できる。 --- 【セキュリティ】このカードをコストを支払わず登場させる。