Hi @heiisniper,
Thank you for your bug report regarding card “52016” (“Stop Hitting Yourself”). However, we were unable to reproduce this bug following your steps.
Could you please provide more details about which cards you played to boost your DEF? Additionally, please check if the situation matches the condition for “52016,” which requires that you “take no damage.” If possible, sharing your save file would greatly help us identify the issue.
Thank you for your assistance!