M10 is very snowbally; the intended strategy is to keep the enemy locked-down as much as possible. And after I increased the max handsize to 7, the best possible Turn 1 got even stronger, allowing for several ways to win from there. You shouldn't need to rely on enemy AI.
[edit: To clarify, you can completely block the enemy on turn 1!]
I'll see about maybe changing it to something less snowbally in the next update. I might replace half their deck with something Immune to get around the AI issue.