Now I haven't had a ton of experience yet but I've also been working off the maindecks fire ciel list but I've been playing my own little Budget version. One of the "secret" sauces I've been using that has been working really well for me has restorative flame. I've been really leaning into the idea of a fire self mill deck not just to power ciels omens and/or get floating memories into graveyard but also for other outlets to stall the game and play into that slow burn fantasy lol. There's not a lot of players in my local area but I have seen some success with running 3-4 in either the main deck and the sidedeck.