

Q1: When my opponent activates this card's On PlayWhen Digivolving effect and I have a card that can be played from my trash, can I choose to not play it?
No, you can't. This effect reads "your opponent plays," therefore you must play a card when possible.
Q2: My opponent's level 4 Digimon was played by an effect, then this card's All Turns effect and another effect triggered simultaneously. I activated the other effect, then the level of the Digimon that was played by an effect increased from 4 to 5. If I then activate this card's All Turns effect, what levels of Digimon can I play?
Level 4 or lower. If the same reference to a "played" trigger condition being performed is made for an effect when it has a "when X is played" trigger condition, the state when the effect has triggered will be referenced. In this case, your opponent's Digimon was level 4 when this card's All Turns effect triggered, therefore you can play a level 4 or lower Digimon.
Q3: My opponent's level 4 Digimon was played by an effect, then this card's All Turns effect and another effect triggered simultaneously. I activated the other effect, then the Digimon that was played by an effect was removed from the battle area. If I then activate this card's All Turns effect, can I play a Digimon card?
Yes, it can be played. If the same reference to a "played" trigger condition being performed is made for an effect when it has a "when X is played" trigger condition, the state when the effect has triggered will be referenced. In this case, your opponent's Digimon was level 4 when this card's All Turns effect triggered, therefore you can play a level 4 or lower Digimon.
Lv.5 Dragomon EX5-060 R Ultimate | Virus | Aquabeast [On Play] [When Digivolving] Your opponent plays 1 level 4 or lower Digimon card from their trash suspended without paying the cost. [On Play] effects on Digimon played by this effect don't activate. [All Turns] [Once Per Turn] When an effect plays an opponent's Digimon, you may play 1 purple Digimon card with a level less than or equal to it from your trash without paying the cost. --- <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.)
Lv.5 Dragomon EX5-060 R Ultimate | Virus | Aquabeast [On Play] [When Digivolving] Your opponent plays 1 level 4 or lower Digimon card from their trash suspended without paying the cost. [On Play] effects on Digimon played by this effect don't activate. [All Turns] [Once Per Turn] When an effect plays an opponent's Digimon, you may play 1 purple Digimon card with a level less than or equal to it from your trash without paying the cost. --- <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.)
Lv.5 Dragomon EX5-060 R ultimate | Virus | Aquabeast [On Play] [When Digivolving] Your opponent plays 1 level 4 or lower Digimon card from their trash suspended without paying the cost. [On Play] effects on Digimon played by this effect don't activate. [All Turns] [Once Per Turn] When an effect plays an opponent's Digimon, you may play 1 purple Digimon card with a level less than or equal to it from your trash without paying the cost. --- <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.)
Lv.5 ダゴモン EX5-060 R 完全体 | ウィルス種 | 水棲獣人型 【登場時】【進化時】相手は相手のトラッシュから、Lv.4以下のデジモンカード1枚をコストを支払わずにレスト状態で登場させる。この効果で登場したデジモンの【登場時】効果は発揮しない。 【お互いのターン】[ターンに1回]効果で相手のデジモンが登場したとき、自分のトラッシュから、登場したデジモンのLv.以下の紫のデジモンカード1枚をコストを支払わずに登場できる。 --- ≪貫通≫(このデジモンがアタックしたバトルで相手のデジモンを消滅させたとき、アタック終了前にチェックする)