Quote Originally Posted by jwalker View Post
öhmm careful here I think otherwise HK is also immun to steal (if it's the only card, Mind break?, Seer's ability and so on? Maybe the ability does not work in draw but if you claim the ability is already working in your hand then Steal is true for sure and you couldn't use HK to remove possessed wall ...

Edit: just saw someone already mentioned steal.
HK doesn't have an ability until it is summoned. Cards' abilities can be active outside of that if they say they can be (eg Father Ben, Elut-bal), but HK doesn't. However, STOUT still ignores CoN. It's tries to affect the HK as its summoned, and STOUT says no.