Yep, making three decks is pretty clearly our only option. We salvage six from each of the following:
55k 55k 55k 55k 55k 55k 55k 55q 55q 55q 55r 55r 55r 55r 55t 58o 58o 58o 58o 58o 58o 58o 58q 58r 58r 58v 58v 591 591 595
4vc 4vc 4vc 4vc 4vc 4vc 4vc 4vh 4vh 4vh 4vh 4vh 4vh 4vl 4vl 4vn 5uk 5uk 5uk 5uk 5uk 5uo 5uo 5up 5up 5uq 5ur 5ut 5ut 5ut 5ut
and keep 20 from here:
4vc 4vc 4vc 4vh 55q 55q 55t 55t 5f2 5f2 5f2 5f2 5f5 5f6 5f6 5f6 5f7 5f7 5f7 5f7 5f9 5f9 5f9 5f9 5f9 5f9 5fb 5fc 5fc 5fc 5fc 5fc 5fc 5lg 5lg 5og 5og 5rk 5rp 5rp 5rp 5rp 5rp 5rp 61u 621 621 621 621 621
Easier for me to see them all in one place.
From the first deck I think salvaging earth is probably better than gravity unless we're strongly suspect one opponent will shieldlock this round.
From the second deck salvaging entropy is clearly correct.
From the third, I think we should keep:
3 deflags, 1 ragepot, 1 fire shield, 6 immos, 3 amethyst pillar, 1 lycan, 1 lobo
And drop the:
4 crimson dragons, 6 phoenix, 4 farenheit, (we have too many of all of that and too few pillars to support them), 6 dials, 1 RT, 2 fog, 2 reflector
The remaining cards are 5 quint, 2 momentum, 2 grav pull. My first thought was to say drop the gravity cards here and take the earth cards in the first deck. But then I saw we have 7 quints. Meh.
This would leave us with 57 fire cards.
About the decks you posted:
Your deck is great but you've used it enough it probably won't be a surprise. I commented a couple rounds ago that shield lock is your doom but you managed to prove me wrong.
Still, you may want to find room for another 1-2 deflags. They're versatile.
The grabby deck is great; I was surprised at how effective it was. While practicing, I beat some really good t50 decks, including unionruler's fractal RoL hope. We can consider adding purify, especially if we're up against Death.
The other three decks are phenomenal starting points. We can tweak them later. I racked my brain to come up with a decent alternative to what Antagon listed and the best I could come up with was this:
52g 52g 52g 52g 52g 52q 52q 52r 52r 5f0 5f0 5f0 5f0 5f0 5f0 5f0 5f3 5f3 5f3 5f3 5f3 5f3 5f6 5f6 61q 61q 61q 61q 61q 61q
Tested surprisingly well.