Q1: What 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), digivolution requirements, DNA digivolution, DigiXros requirements, burst digivolve, App Fusion, or Link. 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: Can I use this card's When Digivolving effect to attack even when this card is suspended?
Yes, it can attack.
Lv.5 Arresterdramon: Superior Mode BT21-072 R Ultimate | Vaccine | Dragon/Hero [Digivolve] Lv.4 w/<Save> in text or w/[Hero] trait: Cost 3 <Raid> <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.) [When Digivolving] This Digimon may attack without suspending. [All Turns] This Digimon gets +1000 DP for each of its digivolution cards. --- Inherited: [Your Turn] This Digimon gets +2000 DP.
Lv.5 Arresterdramon: Superior Mode BT21-072 R Ultimate | Vaccine | Dragon/Hero [Digivolve] Lv.4 w/<Save> in text or w/[Hero] trait: Cost 3 <Raid> <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.) [When Digivolving] This Digimon may attack without suspending. [All Turns] This Digimon gets +1000 DP for each of its digivolution cards. --- Inherited: [Your Turn] This Digimon gets +2000 DP.
Lv.5 Arresterdramon: Superior Mode BT21-072 R Ultimate | Vaccine | Dragon/Hero [Digivolve] Lv.4 w/<Save> in its card text or w/[Hero] trait: Cost 3 <Raid> <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.) [When Digivolving] This Digimon may attack without suspending. [All Turns] This Digimon gets +1000 DP for each of its digivolution cards. --- Inherited: [Your Turn] This Digimon gets +2000 DP.