Sierkovitz
@sierkovitz.bsky.social
Data analysis in Magic: The Gathering; Magic Numbers podcast; Limited Resources regular guest. Interested in coaching - ping me a message.
linktr.ee/sierkovitz for socials
linktr.ee/sierkovitz for socials
Pinned
Sierkovitz
@sierkovitz.bsky.social
· Feb 7
Since I got a load of new followers who, I suspect, have no idea who I am, a short introductory thread.
Starting with the basics: I look at data in Magic and try to convert numbers to actionable advice. You might have heard me on Limited Resources, but I also have my own podcast, Magic Numbers.
1/8
Starting with the basics: I look at data in Magic and try to convert numbers to actionable advice. You might have heard me on Limited Resources, but I also have my own podcast, Magic Numbers.
1/8
New Magic Numbers are live! Which cards are secretly multicolored? Which elves payoffs do well in non-elves decks and a lot of semi-secret techs in today's ep where we go all through the spoiler! Join me at
twitch.tv/sierkovitz
twitch.tv/sierkovitz
February 10, 2026 at 10:31 PM
New Magic Numbers are live! Which cards are secretly multicolored? Which elves payoffs do well in non-elves decks and a lot of semi-secret techs in today's ep where we go all through the spoiler! Join me at
twitch.tv/sierkovitz
twitch.tv/sierkovitz
When realise that you accidentally ordered 8 Sunderflocks on Friday instead of 4.
February 1, 2026 at 2:42 PM
When realise that you accidentally ordered 8 Sunderflocks on Friday instead of 4.
I wrote several different tweets trying to express the sadness I feel of Kai's passing. None of them did him justice.
It is impossible to overstate what an inspirational figure he was for aspiring players in the early 00s.
Rest in peace.
It is impossible to overstate what an inspirational figure he was for aspiring players in the early 00s.
Rest in peace.
January 30, 2026 at 2:08 PM
I wrote several different tweets trying to express the sadness I feel of Kai's passing. None of them did him justice.
It is impossible to overstate what an inspirational figure he was for aspiring players in the early 00s.
Rest in peace.
It is impossible to overstate what an inspirational figure he was for aspiring players in the early 00s.
Rest in peace.
Did you hear of "Magic players react to Hasbro being sued by some shareholders for overprinting cards-political compass"?
January 28, 2026 at 12:22 PM
Did you hear of "Magic players react to Hasbro being sued by some shareholders for overprinting cards-political compass"?
Some more Arena Powered Cube data for your pleasure.
One fan from Denver, Colorado asked: is it possible that power 11 cards (see thread linked at bottom for explanation) are seen in packs more often.
In theory, each card should be opened at the same rate.
1/11
One fan from Denver, Colorado asked: is it possible that power 11 cards (see thread linked at bottom for explanation) are seen in packs more often.
In theory, each card should be opened at the same rate.
1/11
January 26, 2026 at 2:34 PM
Some more Arena Powered Cube data for your pleasure.
One fan from Denver, Colorado asked: is it possible that power 11 cards (see thread linked at bottom for explanation) are seen in packs more often.
In theory, each card should be opened at the same rate.
1/11
One fan from Denver, Colorado asked: is it possible that power 11 cards (see thread linked at bottom for explanation) are seen in packs more often.
In theory, each card should be opened at the same rate.
1/11
New magic Numbers are up and it's the ones most of you like to see - the early data for Lorwyn Eclipsed is here. see which colours / cards win the most while I try to sneakily smuggle in my hypotheses about the format's rules of engagement.
youtu.be/_XvxPkpwZrQ
youtu.be/_XvxPkpwZrQ
Magic Numbers #175: Early 17Lands Draft Data for Lorwyn Eclipsed
YouTube video by Sierkovitz
youtu.be
January 25, 2026 at 2:59 PM
New magic Numbers are up and it's the ones most of you like to see - the early data for Lorwyn Eclipsed is here. see which colours / cards win the most while I try to sneakily smuggle in my hypotheses about the format's rules of engagement.
youtu.be/_XvxPkpwZrQ
youtu.be/_XvxPkpwZrQ
New magic Numbers: Early Data for Lorwyn Eclipsed live now - join me at twitch now to get some foothold in the new format.
twitch.tv/sierkovitz
twitch.tv/sierkovitz
January 24, 2026 at 10:54 PM
New magic Numbers: Early Data for Lorwyn Eclipsed live now - join me at twitch now to get some foothold in the new format.
twitch.tv/sierkovitz
twitch.tv/sierkovitz
With a couple of days of data for Lorwyn draft we have over 70k games. Time to (cautiously) look at the win rates.
Supported color pairs do better than non-supported one, apart from Goblins (RB). They lag seriously behind. But that doesn't mean they are unplayable.
1/13
Supported color pairs do better than non-supported one, apart from Goblins (RB). They lag seriously behind. But that doesn't mean they are unplayable.
1/13
January 22, 2026 at 3:10 PM
With a couple of days of data for Lorwyn draft we have over 70k games. Time to (cautiously) look at the win rates.
Supported color pairs do better than non-supported one, apart from Goblins (RB). They lag seriously behind. But that doesn't mean they are unplayable.
1/13
Supported color pairs do better than non-supported one, apart from Goblins (RB). They lag seriously behind. But that doesn't mean they are unplayable.
1/13
New Magic Numbers are out. And it's time for our eccentric, deck-centric set review.
What are the builds for the supported color pairs and what are some spicy suggestions.
This time we have @sampratt.bsky.social Adam DDVAP and @zakagan.bsky.social
youtu.be/WZ3avd09XQM
What are the builds for the supported color pairs and what are some spicy suggestions.
This time we have @sampratt.bsky.social Adam DDVAP and @zakagan.bsky.social
youtu.be/WZ3avd09XQM
Magic Numbers #174: Lorwyn Eclipsed with the Skeleton Crew
YouTube video by Sierkovitz
youtu.be
January 20, 2026 at 4:51 PM
New Magic Numbers are out. And it's time for our eccentric, deck-centric set review.
What are the builds for the supported color pairs and what are some spicy suggestions.
This time we have @sampratt.bsky.social Adam DDVAP and @zakagan.bsky.social
youtu.be/WZ3avd09XQM
What are the builds for the supported color pairs and what are some spicy suggestions.
This time we have @sampratt.bsky.social Adam DDVAP and @zakagan.bsky.social
youtu.be/WZ3avd09XQM
Join the Skeleton Crew and see our vision for the Lorwyn eclipsed draft decks. Live now at
twitch.tv/sierkovitz
with DDVAP, @sampratt.bsky.social
twitch.tv/sierkovitz
with DDVAP, @sampratt.bsky.social
January 19, 2026 at 9:27 PM
Join the Skeleton Crew and see our vision for the Lorwyn eclipsed draft decks. Live now at
twitch.tv/sierkovitz
with DDVAP, @sampratt.bsky.social
twitch.tv/sierkovitz
with DDVAP, @sampratt.bsky.social
Power 9 is no more. It is power 11. Here is how i found it:
So.... It was put to my attention that Arena powered cube never has packs with 2 pieces of power 9 in them.
I was sceptical, but turns out it is true.
I looked at ~18000 drafts and results are striking.
1/5
So.... It was put to my attention that Arena powered cube never has packs with 2 pieces of power 9 in them.
I was sceptical, but turns out it is true.
I looked at ~18000 drafts and results are striking.
1/5
January 19, 2026 at 4:07 PM
Power 9 is no more. It is power 11. Here is how i found it:
So.... It was put to my attention that Arena powered cube never has packs with 2 pieces of power 9 in them.
I was sceptical, but turns out it is true.
I looked at ~18000 drafts and results are striking.
1/5
So.... It was put to my attention that Arena powered cube never has packs with 2 pieces of power 9 in them.
I was sceptical, but turns out it is true.
I looked at ~18000 drafts and results are striking.
1/5
That one was such a joy to record. I usually can’t escape the data part of my life but this time Shivam grilled me about Sierko the person, not Sierko the number cruncher and I was very happy with the result - and hopefully you will be too.
This week on Casual Magic, I'm joined once again by magic's data impresario @sierkovitz.bsky.social to discuss his life and the art of magic data. Also the wild history of his family's underground politics in Poland during the cold war!
www.youtube.com/watch?v=OlcJ...
www.youtube.com/watch?v=OlcJ...
The Return of MTG's Limited Data Fiend with Sierkovitz | Casual Magic Ep. 311
YouTube video by Casual Magic with Shivam Bhatt
www.youtube.com
January 13, 2026 at 6:06 PM
That one was such a joy to record. I usually can’t escape the data part of my life but this time Shivam grilled me about Sierko the person, not Sierko the number cruncher and I was very happy with the result - and hopefully you will be too.
What is better in vintage cube: Black Lotus or Sol Ring? data suggests in the Arena version of the cube it is Lotus and it's not particularly close. That is just one of many, many tidbits in my latest magic Numbers - all about cube data. make sure to check it out.
youtu.be
January 13, 2026 at 5:22 PM
What is better in vintage cube: Black Lotus or Sol Ring? data suggests in the Arena version of the cube it is Lotus and it's not particularly close. That is just one of many, many tidbits in my latest magic Numbers - all about cube data. make sure to check it out.
So - I did some analysis of Arena Power Cube - come and join me, we can talk about what makes the decks tick and hopefully confirm and challenge some long held beliefs.
twitch.tv/sierkovitz
twitch.tv/sierkovitz
January 12, 2026 at 10:09 PM
So - I did some analysis of Arena Power Cube - come and join me, we can talk about what makes the decks tick and hopefully confirm and challenge some long held beliefs.
twitch.tv/sierkovitz
twitch.tv/sierkovitz
The storm in the UK was real.
How do I know?
Well…
Good I was not in the loo… We are fine, just frustrated with life. Just finished doing the house up. Back to square 1. I dread to see the roof damage in the morning.
How do I know?
Well…
Good I was not in the loo… We are fine, just frustrated with life. Just finished doing the house up. Back to square 1. I dread to see the roof damage in the morning.
January 8, 2026 at 9:07 PM
The storm in the UK was real.
How do I know?
Well…
Good I was not in the loo… We are fine, just frustrated with life. Just finished doing the house up. Back to square 1. I dread to see the roof damage in the morning.
How do I know?
Well…
Good I was not in the loo… We are fine, just frustrated with life. Just finished doing the house up. Back to square 1. I dread to see the roof damage in the morning.
I really like the look of the Lorwyn Special Guest sheet but the flavour text on that one is something else...
January 7, 2026 at 2:54 PM
I really like the look of the Lorwyn Special Guest sheet but the flavour text on that one is something else...
Controversial take: Being grumpy because a deck is so good that even decks designed specifically to beat if don't get 50% WR against it is not the same as being grumpy cause now you need to put interaction in your decks to deal with a 2/2
January 6, 2026 at 7:52 PM
Controversial take: Being grumpy because a deck is so good that even decks designed specifically to beat if don't get 50% WR against it is not the same as being grumpy cause now you need to put interaction in your decks to deal with a 2/2
Latest Magic Numbers are on YT! This time I am looking at the best of 2025. But in a shocking twist - I do it from the perspective of data. Who could have expected?
youtu.be/nH3VJbQgom8
youtu.be/nH3VJbQgom8
Magic Numbers #172: Best draft cards of 2025
YouTube video by Sierkovitz
youtu.be
January 5, 2026 at 1:49 PM
Latest Magic Numbers are on YT! This time I am looking at the best of 2025. But in a shocking twist - I do it from the perspective of data. Who could have expected?
youtu.be/nH3VJbQgom8
youtu.be/nH3VJbQgom8
Time to sum up 2025 Limited through data - multiple categories of cards and win rate comparison to try and find some trends that spanned 5 regular sets of this past year.
twitch.tv/sierkovitz
twitch.tv/sierkovitz
January 4, 2026 at 9:01 PM
Time to sum up 2025 Limited through data - multiple categories of cards and win rate comparison to try and find some trends that spanned 5 regular sets of this past year.
twitch.tv/sierkovitz
twitch.tv/sierkovitz
I need some cheering up... Spent the whole day recording an unboxing vid for my TLA Collector Boxes and discovered that my microphone got fucked during recording and it sounds horrendous
:(
Should I still put it out?
:(
Should I still put it out?
January 2, 2026 at 11:24 PM
I need some cheering up... Spent the whole day recording an unboxing vid for my TLA Collector Boxes and discovered that my microphone got fucked during recording and it sounds horrendous
:(
Should I still put it out?
:(
Should I still put it out?
I start by figuring out which retail set the 7 people in question are the most familiar with and get a box of that. And after the retail draft we vintage cube. Tried cube before retail in the past and it doesn’t work well.
mtg personality test but the only question is "there are 8 people who want to play, how do you accommodate this?"
January 2, 2026 at 11:52 AM
I start by figuring out which retail set the 7 people in question are the most familiar with and get a box of that. And after the retail draft we vintage cube. Tried cube before retail in the past and it doesn’t work well.
2025 was a good year. Podcast is still alive and well, I did well in a paper event, started working with a pro team, won some boxes.
But most importantly, I did it on my own terms. Without compromising my values. I hope I can sustain that for 2026.
And wish you the same.
But most importantly, I did it on my own terms. Without compromising my values. I hope I can sustain that for 2026.
And wish you the same.
January 1, 2026 at 1:44 PM
2025 was a good year. Podcast is still alive and well, I did well in a paper event, started working with a pro team, won some boxes.
But most importantly, I did it on my own terms. Without compromising my values. I hope I can sustain that for 2026.
And wish you the same.
But most importantly, I did it on my own terms. Without compromising my values. I hope I can sustain that for 2026.
And wish you the same.
A rare proud father post (I’m proud all the time just post about it rarely).
My daughter got her Switch 2 for Christmas and spent the next 2 days - no, not playing - crocheting a case for it and I was trully amazed by the result. Extra pockets, slot for cartridges - work of art.
My daughter got her Switch 2 for Christmas and spent the next 2 days - no, not playing - crocheting a case for it and I was trully amazed by the result. Extra pockets, slot for cartridges - work of art.
December 28, 2025 at 2:20 PM
A rare proud father post (I’m proud all the time just post about it rarely).
My daughter got her Switch 2 for Christmas and spent the next 2 days - no, not playing - crocheting a case for it and I was trully amazed by the result. Extra pockets, slot for cartridges - work of art.
My daughter got her Switch 2 for Christmas and spent the next 2 days - no, not playing - crocheting a case for it and I was trully amazed by the result. Extra pockets, slot for cartridges - work of art.
Since y'all been naughty, here is an early Christmas coal lump in the form of my latest Magic Numbers on You Tube. This time: playing 16 lands in your deck in a defiance to what the website prescribes.
When to do it, when to avoid it and why do it.
Enjoy, I'm off to cook!
youtu.be/7LzswqPYK0g
When to do it, when to avoid it and why do it.
Enjoy, I'm off to cook!
youtu.be/7LzswqPYK0g
Magic Numbers #171: 16Lands Data
YouTube video by Sierkovitz
youtu.be
December 24, 2025 at 3:49 PM
Since y'all been naughty, here is an early Christmas coal lump in the form of my latest Magic Numbers on You Tube. This time: playing 16 lands in your deck in a defiance to what the website prescribes.
When to do it, when to avoid it and why do it.
Enjoy, I'm off to cook!
youtu.be/7LzswqPYK0g
When to do it, when to avoid it and why do it.
Enjoy, I'm off to cook!
youtu.be/7LzswqPYK0g
Going live with the new Magic Numbers. And since it is my birthday (sort of) we will be focusing on my favourite website: 16Lands.
When to trim that 1 land, what does the data say and why looking at raw win rates doesn't paint the full picture.
Join me at
twitch.tv/sierkovitz
When to trim that 1 land, what does the data say and why looking at raw win rates doesn't paint the full picture.
Join me at
twitch.tv/sierkovitz
December 20, 2025 at 9:54 PM
Going live with the new Magic Numbers. And since it is my birthday (sort of) we will be focusing on my favourite website: 16Lands.
When to trim that 1 land, what does the data say and why looking at raw win rates doesn't paint the full picture.
Join me at
twitch.tv/sierkovitz
When to trim that 1 land, what does the data say and why looking at raw win rates doesn't paint the full picture.
Join me at
twitch.tv/sierkovitz