Core shell idea is from Sunyveil's
4f Jekkinations. I've made some pretty substantial changes following the nerfs to FTS Sac and some due to personal preference.
Basic idea is draw a bunch of cards and make a bunch of little things. Then speed out an early
Edge of Uprising to clean up seeds and the opponent's health total or finish a long game with
Grodov's Burden in the market. Remember that although
Kato, Arena Herald is a single faction card, he makes multifaction tokens for
Mother of Skies. It can be very tempting to play a
Tota Pioneer on 2 to curve into an
Auralian Supplier but if you have the option, Kato is usually better, especially if you see your opponent playing Fire.
The biggest change from Sunyveil's list is playing
Ephemeral Wisp, which is a good card to throw at
Kindling Carver or
Jekk, Mercenary Hunter, blocks well, and persistently counts towards
Edge of Uprising. It's also much better now that sac decks are nerfed and
Blightmoth will be seeing less play.
Turn to Seed is a really unique removal option and I want to talk a little bit about how I play it in this deck. It's usually pretty bad to use it on things that have less than 2 health, since the seeds block well against about half of the deck. However, some high priority small hits are Kindling Carver and Rectifier, and removing all copies can really slow down the Praxis engine. In general, try to hold on to this until you have a plan to deal with the seeds;
Jekk, Mercenary Hunter,
Rectifier, and
Edge of Uprising all do great at this. In a pinch, you can reset target seeds to reset the count, but having a 5/7 overwhelm on the other side can easily cost you the game as we don't have great removal for big stuff.
Regarding the nerfs, the changes to
Rectifier, and
Kato, Arena Herald are not very impactful to this deck's playstyle and they are still generally good cards so I've left them all in. I found that in this deck, Nahid's distillation is much worse on 5 than on 4, so I ended up swapping it for
Wisdom of the Elders. I removed unseen interloper as I felt the fixing was pretty unneeded and I didn't want it as sac fodder since the only outlet is
Kindling Carver.
Eremot's Machinations is no longer a market option so that made the choice to cut Interloper substantially easier.
Speaking of the market, I was pretty unhappy with the
Crack the Earth market so I swapped to
Transpose. Not only are the options on 4 better, both the damage and the fast aegis are relevant. The aegis can protect against opposing
Turn to Seed or any relic removal, and the damage can trigger looting with an active
Edge of Uprising as well. I usually prefer
Crystalline Chalice over Linrei's codex unless I want the spellcraft and/or flying to force damage or the flying to block an aerial threat. Chalice on an Ephemeral wisp or double damage Jekk is very good.
If you've gotten this far, thanks for reading! I hope you enjoy the deck :)