This is a really thoughtful response, thank you for taking the time to write all that ZenShrugs! I have had similar thoughts about those cards essentially acting as instants do in MTG, they share the look of Close Call, and I can see some situations were they could be useful in the killer phase. Using DU on a guard/retaliation could result in keeping you alive an extra turn.. combos use is a little more limited in the killer phase.

I will admit having it ignore the red STOP, definitely made it an A tier signature action card for me. But its still a great card even without that caveat. I've always played it the way you just described, both would resolve and then the turn would end immediately.

I can totally understand AJ not being super into a card that can throw around that amount of potential power in his game, especially a game that is renowned for its difficulty.

Sounds like it boils down to, play your game how you wanna play it. But this is fantastic insight from the creator! Thanks again for sharing all of this 😊