Hey,
I have experienced two issues in a game playing Nova vs Klaw.
* Issue 1) I got Jesse Alexander (28008) in the first draw and played him; for the most part of the game, each time I was in alter ego state, I could use his ability just fine. At the end, when switching to alter ego, I was not able to trigger his ability anymore - neither at the end of my turn after I flipped, nor at the beginning of my next turn. Both times he was ready. Connection to the worldminds have been present at this point in my discard pile (but his ability worked before without Connection to the worldminds in my deck as it should since it is no requirement for the card draw)
* Issue 2) I sometimes experienced unexpected behavior with Novas (28009) Hero response - I sometimes could not ready the helmet when I felt i should. I also remember not being able to ready the helmet after I did a basic power standalone, but I am not 100% sure, so I would ignore that right now.
But attacking and afterwards triggering the card Pitchback (28012) - which is offered immediately after the attack is resolved - did at some point certainly not offer me the ability to ready the helmet.
Over the board, I would assume that one might even be able to choose which of the two responses (ready/playing the attack event) should come first, but even if that might not be true, the helmet should be readied regardless.
Replay is present if needed.
Thanks a lot for your effort!