Is card draws skewed?

So recently, I was having problems with always drawing high costs early on (my deck runs 3 9+ and 2 6drops)... and then I tested it...

I built a deck with literally all 1,2 and 3 drops and ONE aegis... here was the results:
Game 1: drew aegis initially; then mulligan him and got him again...
Game 2: Didn't draw aegis... mulligan and drew him.
Game 3: Drew aegis start, didn't get him on mulligan. Got him turn 4.
Game 4: Got aegis turn 6.

Ahem... feels kinda skewed...

Update: Oddly enough I got better results by adding another 6+ cost card to my deck... it's weird how this works.

Asked by Shy1 year 1 month ago


This is absolutely variance, what you draw is always random. A four game test pool his hilariously small when it comes to chance, it's just a coincidence.

“Game 1: drew aegis initially; then mulligan him and got him again...”
Intersting. I’ve always assumed the specific cards you mulliganed won’t come back as replacement cards, since that’s how it worked in Hearthstone. This mechanic changes your % of replacement cards (say you mulligan 3 Lucifers: you’ll have a 3/40 chance of drawing another Lucifer instead of a 0/40 chance) so on the one hand, you know how likely it is to draw certain cards in the mulligan before a match starts, but on the other hand, you’re less likely to ditch those high cost cards. Thank you sir, I’ve learned something today.

by peldor 1 year 1 month ago

I don't think it's safe to assume the card draw mechanism is a simple "random number" thing. We know the Goblin Mage is skewed against roaches.

So there may be other mechanisms in play that suppress or increase the likelyhood of cards showing up in your hand.

Whatever is going on, cards tends to clump for me. It's not uncommon to have 3 copies of a card by the 4th turn. I get that can happen...but it shouldn't happen multiple time a day.