So I just played a game in Arena where my opponent was at 4 life, I had 1 card left in my deck (after drawing my card for the turn), and they had two copies of Drowned Secrets on the battlefield. I played Inescapable Blaze targeting them, and they played Thought Collapse, targeting my Inescapable Blaze on the stack, in response. Arena noted two triggerings of Drowned Secrets.
I then won the game, according to Arena. I am not clear on exactly what happened. I think Arena showed me milling my last card, but I since I won the game apparently having to mill more cards than just the 1 I had remaining did not cause me to lose. I see three basic possibilities:
Thought Collapse fizzled, since it had nothing it could actually counter, and thus Drowned Secrets fizzled and/or didn’t trigger to begin with—I’m kind of surprised that Arena allowed this action and then showed Drowned Secrets triggering if this is the case. And like I said, I think Arena showed my last card getting milled.
Thought Collapse fizzled, but Drowned Secrets still triggered, so I did mill my last card. But then how did I win? State-based actions are determined mid-stack and Inescapable Blaze wouldn’t have resolved yet, right?
Thought Collapse didn’t fizzle, so I actually had to mill three cards for that in addition to four cards for the two instances of Drowned Secrets. The same questions above apply equally-well here.
So what happened?