I think Thorn Carapaces are great in conjunction with Miracles. Miracle buys us enough time to kill all creatures (except Momentum'd ones). We have two already; I think a 3rd would be enough for a deck.
Lol, we have three decks where we can pull Life and Air cards. I suppose it'd be since to take advantage of that. From Air, I think Shockwaves can come in handy. Also Flying Weapons is always handy with MS though it might not get as much use this round since it's too slow against Earth and Death has Bone Wall. We could also make a FFQ deck with Hope. Nevermind, one deck has both the FFQ and Rustlers we'd need to salvage. And playing with both Life and Wind Pillars is possible, but kinda slow and prone to bad draws I would think, especially since we still need 50% Light cards. Also, I don't think we need the rustler at all since we can only salvage 1 Forest Spirit and 3 Frogs from Life. Adrenaline'd Pegasi is a possibility I suppose. Adrenaline'd Flying Staves is another possibility (though if that deck lost, we'd lose all our FWs).
It's only 2 cards, but I think we should grab those Fractals. It'll give us a little more hitting power. Not sure what we'd fractal right now, but it might come in handy in round 4.
We could do a Trio with Cremations, Graviton Fire Eaters, and Photons. Throw in some Rage Potions, Deflags, and Blessings too possibly. Hmmm . . . we could even go more rainbow and add some of our other cards like Lightning, Shockwave, Fog Shield. Or more MSs + FW with Air Mark. But I guess that's pretty similar to implo's deck but slower since I'm using Graviton Fire Eaters instead of Golems and Graboids.
Ok, I think I've written enough. I'll post more later if I think of anything.