Mono-Fire is an extraordinarily fast and soul-crushing deck to play against. Your shields? Gone. Your creatures? Gone. Poison? Too slow, and Physalia dies to Fire Shield in a hearbeat. Even the mighty Arctic Octopus is nigh unto useless once that Shield hits the field.
And playing the waiting game? Oh, no. A solitary Fahrenheit will melt you in 7 or 8 turns. You need action, and you need it now.
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Hence: The Master of Water's Anti-Fire Deck.
Ice Lances take out Ruby Dragons and Lava Destroyers in one hit regardless of your quanta total, and 6 of them make for plenty of ammo. Congeals buy time to build up to 10 quanta if the opponent plays a Crimson Dragon or Fire Spectre.
Abyssal Crawlers are tough hitters, netting you more than 1/3 of the enemy's life total before dying (if un-Bolted). Arctic Dragons are extremely expensive, but deal in 2 hits as much as their unupgraded counterpart deals in 3 -- and they still take a 10-quanta Lance to kill, so if your opponent has just put out his Rubies, you know your Dragon will likely live to strike a second time...but his won't!
Explosions are trivial; you've got plenty of Towers and no other permanents to fuss over. Rain of Fire is easily mitigated by only putting out two creatures at a time. The only real hope the Fire player has is to get a very early Cremation+
Crimson Dragon before you get enough quanta to kill it in one Lance (and he has to hope you haven't drawn a Congeal for it.) --- or to sit back and nuke your creatures and let a Fahrenheit whittle you down enough that simul-casting 3 Dragons will munch you to death in one turn. (The solution? Surprise him to death with a barrage of Ice Lances and a sudden Dragon of your own the turn before he can do it to you.
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