Ninja Boy (STS #103) has been temporarily suspended to prevent a current bug with the card from being exploited. This card bug was found late in the testing cycle for XY-Steam Siege. We have a fix for the issue in testing now. The issue has the potential to impact many other cards. As such, we want to be exhaustive to ensure no other bugs are created from the fix. We currently anticipate the fix will come to the live game in the week of Aug. 8 - 12.
Thank you in advance for your patience and understanding.