Random Shuffler
I was playing Arena today, I play and enjoy the game A LOT. I mean no disrespect by this post I just would like an explanation.
So I usually just play historic casual matches. But lately (past week or two) Ive been getting into games where the opponent concedes immediately, or they are AFK and the timer forces them to concede. Like 9/10 they would concede before the first card is even played.
So I decided to try ranked, to see if there was less of that going on.
(I play life gain mainly. Its a 60 card custom deck with 24 lands and 36 creatures/artifacts/enchantments)
We start no problems, by mid game we were both at or above 20 life. My opponent plays a “destroy all creatures” sorcery. At this point im thinking “oh well, we both start at 0 again”
Its my turn now and I draw a 1 mana drop creature. Fine. I play it. Mind you there are only 5 plains under my control. (My highest casting card is 3 mana) I pass turn and my opponent draws a bigger creature (4/4 with a bunch of abilities/triggered abilities) fine. Luck of the draw I guess.
Its my turn again and I draw a land. I play it.
Its his turn again and he draws another big creature. Fine. Luck of the draw.
Except. I drew. And im not exaggerating here. 10 consecutive. Back to back lands.
I ended up losing because I couldn’t get any creatures out if my 30 total creatures in the deck. And thats fine, cannot win them all, oh well.
BUT i crunched some numbers and double and triple checked my math. (Even used AI to calculate the same number)
So in a 60 card deck. Containing 24 lands and 36 “other” cards. The probability of me drawing 10 CONSECUTIVE lands is this
0.0000022%.
Gemini (Googles AI) said and I quote “this is an extremely low probability and can almost be categorized as impossible.”
Ive run into this issue multiple times. As have many of you in sure. I know my friends have.
You build a deck. with an outstanding land to creature ratio. And you either end up drawing too much land. Or too many creatures.
And the funny thing is, it usually happens after about 5-6 back to back wins. Its like the more you win, the higher likelihood of your deck being stacked against you.
I did some digging and tried to see if WOTC had made an announcement regarding their random shuffler and how it determines what you draw. And as you could imagine, theres nothing. I understand why, I was just hoping for at least a “yes, our card shuffler is 100% randomized by a RNG.” Or something along those lines from WOTC. But theres nothing. It almost feels like its one of those “ plausible deniability” situations. Like oh, we never said it was random so no harm done.
But its people like me, and possibly people like you who are getting screwed by this. Ive been playing Magic a long time. Tabletop and digital. I know how to optimize decks. In table top. I have a life gain deck (similar to my digital deck) that is almost a 90% win chance. Because I have 4 of each creature/enchantment/artifacts that gain life constantly and consistently. I never have this issue.
I winder if they have a line of code somewhere that stacks the deck against people on a win streak. To keep the other people who may have been losing a bunch, happy.
Which is a very bad way of going about it IMO. People need to learn from why they are losing instead of just giving up. So encourage that! Stop being so stingy with wildcards? Would that help? Let people not have to grind so dang much for a single rare wildcard? To get a card that will improve their experience 10 fold.
This “random shuffler” doesn't seem to be random. Im going to take more data and use a very. Very. Large sample size. Its going to take some time but im willing to put in the work.
Just to be absolutely 100% clear here.
I will be taking notes and taking data in new notebooks and will IN NO WAY use any scripts or code on my computer. Ive read the terms of services and I know thats a big ol no no. So Ill do it on paper and save the data. Im actually looking forward to this because I like investigating things of this nature. More to come.

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failnation#65496 commented
The actual problem is, as you've stated, you have a mill deck, play with something else.
The algorithms are *working as intended", meaning the rigging is intentional, and getting screwed is supposed to frustrate people into paying real money to accelerate their collections for more powerful cards faster. These two things are what make people not want to play in general. -
sSQNn#35423 commented
Can you please STOP influencing randomness in MTG Arena?
Yes, stop influencing normal randomness with algorithms that try to decrease strength of one deck over another one by influencing drafts or opponent matching.Example 1:
I have a milling deck.
Based on Ruin Crab. 4 copies.
For ~50 consecutive plays (sic!) with this deck I only once had Ruin Crab in my opening hand.
Typically it takes 2 mulligans to end with a Crab in my hand.
Not to mention problem of drawing lands afterwards (60 card dech, 24 lands).
Also, it is much more likely I get paired with opponent that uses maximum deck size of 250 cards.
I also have a Terisian Mindbreaker in that deck. 2 copies.
And in contrary to Crab I end with it in my first hand in 33%-50% plays...But when I play my second deck, where Ruin ***** are not a core of solution, I don't have any problem with getting them in the first draft.
Example 2:
Drawing lands only or no lands at all (in a 60 card deck with 24 lands).
It is a usual thing to encounter, drawing 5 lands in a row. No matter if you draw them "normally" or you shuffle your deck in between draws.
It's plainly to common.
My personal maximum was 3 lands in opening hand and then, drawing 7 lands consecutively...
Same goes for not drawing any lands BUT interestingly, drawing most expensive cards in deck... Although you only have 4-6 of those in deck.In contrary to one very dumb article on the internet, comparing it to flipping a coin for 200 times and we will always have 50/50 chance for both.
No, we will not have a 50% chance on throwing one side.
If anyone know how probability for consecutive actions works he knows what I am talking about.
For example: for 10 coin flips we only have 0.0977% chance of throwing one side on 10 consecutive throws.Please stop rendering randomness in MTG Arena as it probably does not bring anything good to players.
I have no problem with loosing to a opponent that has a great deck.
That's actually an opportunity to learn new things.
I have a problem loosing because 2 out of 3 plays are broken because of shuffle problem.
Same way I hate to win when I see that my opponent can't play because of broken draws.Thanks in advance.
Oh sorry, I forgot to mention one thing:
maybe you really don't influence it in any way.
But your algorithms are based on some pattern/s that can be reproduced and result in reproducing same outcome.
That might be a case why people face unrealistic situations for a random-based actions.