Bernoulli
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Bernoulli is an insanely potent rush deck. Its SoFr allows it to bypass shields so shield stalls fail unless those shards are countered. Moreover, its creatures can be buffed to exceptionally high damage output on the same turn they are played. In fact, its probably even better at this than most fire decks.
Kirby's counter with bonewall works alright but wasn't quite as consistent as I hoped it would be (although it does at least win some of the time... whereas most of my early attempts failed spectacularly). After a much additional searching and tweaking, I stumbled on this counter.
It works and is quite consistent as long as the ai doesn't get thunderstorms too early on.
Once the combo is rolling, you pretty much just keep it locked down tight until it dies. Make sure your shield doesn't fall too low or it will try to OTK, which it can do very easily if you haven't managed to keep its streams under control.
Be sure to knock down any shards of freedom it pops up as soon as possible. Otherwise your otyughs will struggle to keep its creatures under control before they tear through your debris barricade (at which point it will promptly spam its entire hand and most likely kill you in a couple turns, if not on the same turn).