I'm not saying combat wins are a golden child, but combat wins that operate similarly to low-cost 2-card combos are already stigmatized heavily. If I fucking cheese your ass out with infect, and demand you MUST mull to an answer to not get removed by t4, you'd be pretty pissed. So why would you be okay with making players commit to an hour-long game that will just end in you having bided your time waiting for the moment anyone slips up. You didn't make a decision, you didn't even play the fucking game. You just waited for a game state and declared a win. At least stating up front that you can do this potentially will make it so when it does happen, everyone has had agency in your win - we knew you could do it, and let it happen anyways.