5 Faction Keelo Shrine (Master)

This is the deck I used to get from Diamond 3 to Master (25:11). 5 faction sounds hard to build, especially in Expedition, but it is definetly doable if you are willing to sacrifice some cards with high influence costs, like Gentle Grazer.
Your mulligan is really important in this deck. You want at least 3 power and in the best case at least 1 influence of each faction. The priority for a second influence are shadow, then primal, then time (dependend on your hand, fire and justice dont need a second influence). There are 3 important tools for fixing in this deck. Unfamiliar Interloper only helps with influence screw, and not with power screw, but he is also great in the later stages of the game because he offers 2 bodies in one. Amber Acolyte fixes both and curves perfectly into Nahid's Distillation. Seek Power dalso fixes power and influence and is probably the best option for your starting hand. Other cards you look for in your starting hand are Blightmoth (if you have the influence for it and especially if your expecting an aggro deck), Keelo, Bold Innovator (if you have the influence, at least 3 or 4 power and something good to sacrifice) and Kato, Arena Herald (mostly to get to Ark of Sol.
Your gameplan depends on your opponents deck. Against aggro decks (Skycrag, Unseen, Combrei etc.), which are probably the hardest to beat for this deck, you want a solid power curve up to 3 or 4 and cards that force them into a standstill (Blightmoth, Faithful etc.). If you are able to get a Keelo on the board for a few turns you are most likely going to win. Against more midrangy decks like Dragons, Rakano Armory or FTS sacrifice you want to keep the board under control (Blightmoth, Seedling, Rectifier) and some sort of card advantage (Keelo, Nexus, Chalice, Distillation, Machinations). Dragons can be though to control because they have flying, but recycling Blightmooths can definetly keep them in check. Against control decks like FTJ or TJP you want some small units on board to get some damage in early, but you dont want to overcommit to get destroyed by a single Shen-Ra Speaks. Shrine to Karvet is really important as a finisher in these matchups, which is why you definetly should try to play around relic destruction with Transpose.
Which brings us directly to my market choice. Blazing Salvo and Crack the Earth are probably objectively better, but I have an unhealthy love for Transpose. The aegis is definetly important against relic removal and void or hand hate, and the 2 fast damage were helpful against smaller relic weapons. The 4 mana options arent that bad either. Crystalline Chalice can help you keep going against slower decks and is great in combination with Eremot's Machinations (to bring back buffed units). Profane Nexus is small removal, fixing and card draw in one card and the pings can be helpful too. Fell Ritual is a flexibel removal that puts a unit in your void (for Kato) and Rejection is a great answer to board wipes in theory, allthough I never took it.
Good luck and have fun!

Edit: I just made to top 100 with an 18:2 run and a few small changes. I did cut the Pesky Seedling for a second Rectifier because Rectifier is just better in most situations and Seedling can get stuck in your hand with his double time influence. I also removed 1 rakano seat and added a shadow sigil to get to double shadow more reliably and to have a better sigil to seat ratio. Lastly I removed Chalice from the amrket because I almost never took it and if I did I mostly lost. Instead I put in a Memory Dredger because I wanted to try out a unit in the market.