Anything too be honest. Was my chain of thought at the time. Thought it would be Infernity Barrier (can't even remember if you had cards in hand now), or something of that like. I already can only remember one of your sets and that was Infernity Inferno.
Was around Hampshire driving in the morning till 01:30 while the roads are bare getting used to driving my test. Doing it all this week, so I'm pretty tired and not really paying attention at all. I was even playing in the dark cause my gf was asleep.
EDIT: Just noticed Barrier would need the Infernity in ATK position, I hadn't actually noticed this, and probably wouldn't of done a blind MST, or would have.