I love the list! What would you swap out for imperial seal, timetwister, and the original dual lands if you were as broke as I am?

Milkspy The deck already has a way to win without a Labman effect. Cascade until you hit Extract, cast it on an opponent, cascade until you hit Timetwister, shuffle back, cascade until you hit Noxious Revival, put Timetwister back on top. Rinse and repeat. It's generally not as good as the Labman lines, because you risk giving your opponents countermagic/silences/removal that can break your combo, but if you want to adapt the deck to have a strong, non-labman based win, you can add in a Memory's Journey to make the Extract loop work without Timetwister--it's less of a dead card in hand than the two you suggested, since it can be pitched to Force or used to shuffle back Food Chain if it's in your yard. And as long as one of Timetwister, Noxious, or Journey is still in your library when you start going off, and none of the pieces have been exiled, you can start the loop.

I feel like this mana base needs at least one fetch target for Mountains. Felt sad when I couldn't play my Dockside Extortionist even though I had 2 fetches for mountains

This may be a silly question, but why The First Sliver and not Sliver Queen if/when the time arises, where you actually need to cast your commander, sliver queen offers a defensive strategy, of making chump blockers to stall until you can combo off. (This would go hand in hand if you needed to use your plethora of mana dorks, to fuel her ability!)

It may only be relevant every now and then, with this list, but I assure you that it will happen at some point; where you just get hated out, and need that 1-2 extra turns to combo off...

Just some food for thought!

+1 for a BRUTAL deck!!!

PrestonShilling

The First Sliver is an outlet for Food Chain combo. Sliver Queen is not.

While knowing that the deck will be less efficient, can it be ran without Imperial Seal and Timetwister? If so, what are potential replacements to them? As they're quite expensive.

Yes. Twister can be replaced by Memory's Journey (or really just any other good card, you already have enough win cons) and Imperial Seal can also just be replaced with any other good card (there's no good 1 for 1 replacement).

ShaperSavant I strongly suggest swapping Yavimaya Coast with either Volcanic Island or a Badlands because of Dockside Extortionist. Sorry for the double post, but I just had another game (this time it was my opponent) that was unable to cast him and basically win the game with it.

Arcum_Dagsson, I would not replace timetwister with Memory's Journey. Timetwister is in the deck because it's just a really good card, it also happens to be an outlet. When you replace it with Memory's Journey you only have it as an outlet basicly. For that reason I would play Goblin Bombardment, because that card doesn't need other pieces such as Noxious Revival and Extract to win. Overall when you try to combo off with tainted pact, with goblin bombardment you have a 3% higher chance on not whiffing, compared to Timetwister. And Imperial Seal can be replaced with Sterling Grove.

Milkspy I disagree with your Memory's Journey comment. It is a very good answer to opponent's graveyard strategy and disruption to tutors that search to top of library, now it can even be an answer to Thassa's Oracle consultation if 2 blue devotion is all they have. Entomb works great with it, too.

oo7x7oo, ofcourse it's a totally viable option. But after some debating in the FSFC discord we came to this conclusion (pinned by Shaper):

We run Timetwister because it is a powerful card on its own and is worth the slot regardless if were trying to win by loops. It also acts as a quasi win con as you are able to loop various spells if other options get exiled or removed. hence making it a strong card and an include in the deck.

Memory's Journey on its own does not have a high enough power level to make the cut. Yes it can act as a quasi win condition but is much weaker than other options. You are better off adding a different win condition such as Goblin Bombardment or add the next best value card because on average a high quality card will be far more useful and less dead in your hand compared to Memory's Journey.

It also hurt me to not be able to use twister loops anymore, but the times I had Goblin Bombardment in the last 30 cards of my deck, it made me really happy.

I guess the point I am trying to argue is that journey is less of a dead card when drawn, because you were referring it as an "outlet" only. I agree that bombardment is a better win con, but I like more versatile cards that serves multiple purposes. I have used journey countless times to disrupt opponents, which I think it's being underrated when you say there are higher value cards: because I see it has quite high value especially in FC deck that it can be part of the win con.

phsycord I think if you look back at shaper’s comment earlier he was proposing switching llanowar wastes for taiga to support dockside.

What do you think about allosaurus sepherd? Does it deserve an slot? It seems a very nice cmc1 creature, but i'm not sure if it is more useful than vexing shusher.

I actually find Sparkcaster to be more effective than Goblin Bombardment. Bombardment doesn't do all too much without the combo, whereas sparkcaster, worst case scenario, can hit someone for one or just be a 5/3. If you have an ETB like Dockside Extortionist it lets you replay it and have a creature out that can swing and sac itself to food chain for enough mana to play a CFE creature. Sparkcaster can also be cast off of the Food Chain mana, meaning that if you for some reason can't cast The First Sliver, you can still win.