Hi @xzxixin,
Thank you for reporting the bug regarding card “44041” (’Pool-ized). In the current engine, the logic of TreatAttachedCardAsMinion is the same as when a Villain advances. Since a Villain advance triggers “TOUGHNESS,” it will also trigger in this case.
If you believe this interpretation is incorrect, could you please provide any relevant FAQ or rules that address how to process TreatAttachedCardAsMinion?
Thank you once again for your support!