Completely honestly, I hate those fire lance sudden killer decks. They almost never win for me, and maybe it's because I don't know when to start dimshielding, or maybe I just get bad draws and luck, but I really dislike that deck.
So, I made a variation on the 2nd post deck, custom built for me, with the upgraded cards I had at my disposal, and some I wanted to try out - so not something you should just copy-paste into the game unless you happen to have the exact same cards and feelings as me.
Hover over cards for details, click for permalink
55p 55p 55p 55p 55p 55p 576 576 576 576 576 576 576 576 576 576 576 58o 58o 58o 58o 58o 58o 58t 58t 58t 591 591 591 591 591 591 594 594 594 594 594 594 748 748 74i 778 77b 77f 77f 8pm
It's probably just as unreliable, but I like it more. (Plus, that little extra cash you get from stone skins)
The concept works if you get a good start, and a grav shield out. Might wanna add some BBs as well, since Elidnis stopped growing spirits which got through it.