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A Certain Sundown Railgun (v.1.0)

Throne Deck By

Work in Progress

Cost Curve




Finally, the new set dropped and i welcome you to the world of shenanigans in eternal, yet again. And i assure you I'm not messing around to reignite the flame of creativity for eternal in everyone! This time, i share a deck build around Sundown Accord, Eilyn, Hand of the Tempest and the Premonition Bolts of Lethrai Soothsayer!

I'm certain there are many ways to approach this deck so i just straight up went for the greediest approach and boy howdy, it's unfair if it's allowed to play. EDIT: 05/13 Splee added Tomb of the Azuremage and Primal Etchings in this deck to reduce the bricks after popping off and to add more market access. Thanks for the idea! Also added Linrei's Kiss instead of Discover Talents because it can search Lethrai Soothsayer, which is a needed part for the combo. Thanks for all the positive feedback, love y'all! <3

Gameplan: Get an aegis unit on board, use it to proc the Onslaught of Lethrai Soothsayer and then go to the market, use Sundown Accord on Premonition Bolt, transforming all of your remaining Primal Sigil in the deck into a complete barrage of Bolts, since they all have warp you can instantaneously win the game on the spot if you're lucky! Eilyn, Hand of the Tempest is the alternative way to win, even if all the bolts won't otk immediately each of the bolts hitting their face will reduce the ultimate cost of her and Channel does the rest. Go Misaka!

And that's kinda all i have to say about this deck, it's bricky but hilarious, next one will be with 25 sigils and a deck that isn't hilariously all-in on the sundown strategy, i think even if you only have 25 sigils, with eilyn you can get similar otks down with a more stable gameplan during the match.

Questions, concerns, replacement options, insults, hugs, cookies, love letters... drop it all in the comments, I'll respond asap as always :P

Your Kira, enjoy the new set! <3

(Pls, i hope someone got the referance) "Hello, did you get the referance? Hello? Is anyone here? ... :(


Shiftstone Cost
Does not include campaign cost

Premium Cost

Influence Requirements

Power Sources

Power Calculator
Shiftstoned Icon View Deck on Shiftstoned

Deck Rarities
13 11 4 9

Card Types
20 4 13 0 43

Contains Cards From Campaigns
Dead Reckoning [Set1003]
Shadow of the Spire [Set1087]


May 13, 2022

May 11, 2022


Eternal Version

BBCode For Comments

Deck URL

Revisions (Since last major patch) May 13, 2022



Watermelon Edited Eternal Version: 22.05.18
Whispering wind seems pretty good to turn extra power into combo pieces, she also activates onslaught on turn 3
Edit: Got a 7-0 gauntlet run in high difficulty with the deck running whispering winds, lightning storms and permafrosts instead of strategize and some sigils. Impressive for this kind of deck to do that. Thanks for the fun brew!
abbaabbaabba Eternal Version: 22.05.13
seems fun
Zuvatan Eternal Version: 22.05.13
Your Misaka Mikoto reference is understood ;)
DarkCorbeau Eternal Version: 22.05.13
Add card tag to Premonition Bolt ?
Duelist Edited Eternal Version: 22.05.13
Great minds think alike! The second I read Sundown Accord, I knew I wanted to make a deck around it with Lethrai Soothsayer as well (I've been trying to make her work for a while now)! Mine turned out way slower and expensive shiftstone wise so I'll definitely give yours a try. Notable additions to my deck include Skyward Seer and Chirganth, Ice Regent. I doubt they could find space in your list, but it's something to consider. Thanks for posting!
ArrowofKira22 Eternal Version: 22.05.13
They can be fun additions but one big problem i generally have with cards like Skyward Seer is that she needs a spark to get the eff off, and that's too unreliable. Deck is already bricky enough and cards liker her don't fix the problem, even when it seems like it would.
Vision Edited Eternal Version: 22.05.13
Skyward Seer is solid imho. Have you tried using Icicle Marksman? I’m finding him/Eilyn/spells to be pretty gross.
Vision Eternal Version: 22.05.13
So call me an idiot but why not Eilyn, Queen of the Wilds in market? If you’re going to burn 10-20 power into damage spells, might as well play 2-for-1’s, no? Trick Throw seems like it would be a very solid Frenzy trigger here. These are just initial impressions. I’ll try and fool around with your brainchild a bit more.
ArrowofKira22 Eternal Version: 22.05.13
yeah that eilyn is an option but at the same time when we get to play sundown she shoudn't matter any more because we're already winning
Vision Eternal Version: 22.05.13
I get that you expect to be winning at that point. My head went to what if we get stalled, interrupted, or can’t naturally draw Premoniton Bolt? More at 25 power though and less the insane number of sigils. I’ve been busy retooling 4.5f control for Diamond of the Valley and the possible meta changes in relic hate so I’ll try and get back to you when I’ve had time to play with it more extensively. I love combo though ^_^
marvin_the_imp Eternal Version: 22.05.11
I tried the first version on stream last night with very mixed results. I get the 50 power, but I sort of feel there needs to be a back up plan to victory. When it did go off, it was fun.
ArrowofKira22 Edited Eternal Version: 22.05.11
Yeah that's the experience most people had so far, when i posted the deck i honestly didn't realize tomb was a card so my bad, eilyn is the backup plan but it isn't great and it's not inherently dealing with the issue the deck has and it's generally hard to fix that problem if you try to stick to the all-in greedy strategy. It's all WIP so feel free to share any recommendations and ideas, everyone is happy to get those :) Hope you had atleast some fun on your stream with the deck
marvin_the_imp Eternal Version: 22.05.11
Oh I definitely had fun!
Splee Eternal Version: 22.05.11
Try the updated version. Tomb of the Azuremage plus the etchings improves reliability and makes the combo fly without a stop.
Splee Eternal Version: 22.05.11
This is fun. What a concept for Sundown Accord. I made an update inspired by this. Frenzy Machine Gunner
More draw, more market access and the deck really rolls with a little frenzy.
ArrowofKira22 Eternal Version: 22.05.11
Added those cards too, thank you for the feedback! <3
Stormblessed Eternal Version: 22.05.11
I very rarely comment but I had to this time because I think this deck is absolutely hilarious (and I also got the reference).

Is it probably competitive? Hell no. Is it probably fun and a blast to play? Hell yes!
ArrowofKira22 Eternal Version: 22.05.11
<3 I'm honored and am glad to hear it, enjoy eternal! :)
chaostehjace Eternal Version: 22.05.11
I appreciate the reference. I hope to test this list out soon when I can pick up 4x Eilyn. Unless you have a better substitute idea.
ArrowofKira22 Eternal Version: 22.05.11
just max out the other cards or play some etchings, should work too for the moment :)
chaostehjace Eternal Version: 22.05.11
I crafted the rest of the deck replacing Eilyn with Etching. Deck is really fun!! I have been testing out several fun decks, including infinite turns, and unleash + alhed. It really feels like my opponents aren't doing anything while I set up, but it is probably because the meta hasn't shifted to deal with these new shenanigan decks. It's easy and fun to pull off a cheap victory while people are playing turn 4 Worldpyres or spending 5 turns setting up a mill deck, but these decks really don't seem fast enough to keep up with what the new set has provided. I have lost a game (in general) to the one guy out there playing counter spells, but that is few and far between. They are going to have to give us better counterspells at this point, because some of the things we can do as of this moment, are ridiculous. Opponents are too eager to tap out for their own game plan, and even those holding back usually don't have the response they need to not get buried in whatever these new decks are doing.
ArrowofKira22 Edited Eternal Version: 22.05.11
Oh unleash Alhed seems dirty :P i saw someone using Unleash cards with Genetrix which prevents the discard and that might be something I'll be looking into in the future. And yeah the meta hasn't settled yet, which is amazing if you want to explore and experiment with cards in all formats. Btw talking about counterspells, Check-Raise is a really good one in decks that try to be tempo efficent because it's affordable to hold one power open, whereas paying 3 to get the card through might not be worth it or is strictly not affordable.
chaostehjace Eternal Version: 22.05.11
Genetrix is played with Rewind at 12 power to take an extra turn every turn, deck is very fun. I am going to be interested in check-raise in the coming days I'm sure, we can counter war over our game winning strategies
sto650 Eternal Version: 22.05.11
About the reference, is it a play on the mono-faction deck concept as related to a Sundown town?
ArrowofKira22 Eternal Version: 22.05.11
Surprisingly no, and i wish it would have been now... It's the anime a certain scientific railgun. Fun if you like anime in general, if not don't bother. :)
sto650 Edited Eternal Version: 22.05.11
Isn't this rather a lot of steps? Or am I missing something?
1. Proc onslaught
2. Play Soothsayer
3. Draw into a Premonition Bolt and play it
4. Draw a merchant at some point
5. Play Sundown Accord
Edit- I played two games, and both times - the combo just sorta happened somehow. Seems like it shouldn't, but it did. Still lost the first game though - it was a lifeforce deck, so they healed a TON and made gigantic units.
ArrowofKira22 Eternal Version: 22.05.11
Yes, the combo needs a lot of steps and it is super greedy, that's why i put it up as WIP and will do another deck like this. That being said as far as i know, and as you already mentioned, the combo can still happen for a reason, because of eternals inherit algorithm for decks with inverse deck ratio of power cards and non-power cards. For example when you mulligan for your second time you're guaranteed to get 2-4 power cards, means you can start the game with 3-5 non-power cards every time! So basically if you start with soothsayer or merchant, you might actually almost get there already. A bit of draw, a couple cards for interaction and et voila, we combo off. :P
If someone knows more about the eternal card algorithm pls drop a comment to elaborate this topic further! Very good question tho! :))
APoorPerson Eternal Version: 22.05.11
This, this is a work of art...
ArrowofKira22 Eternal Version: 22.05.11
Thank you, remember creativity is the key for enjoyment for everyone! <3
Random_7945 Eternal Version: 22.05.11
consider etchings
ArrowofKira22 Eternal Version: 22.05.11
Yeah i was thinking about them, but with only 25 spots things are tough.