Do Booster Packs contain all cards or is it "limited" like those I get while playing?

[aquila]

At the moment I try to get a Badge done for a game that is no longer on the store and has no cards to buy on the market, by creating boosters with gems. But at this point I have some cards 7-8 times and one specific card not even once. Is this just bad luck or is it not possible to get all the cards from a booster I created?

[Astaroth]

All card drops are random, even the ones from booster packs. You could get repeated cards again or not

[blunus]

Booster packs generally contain 3 random cards, not all.
You could get duplicate cards from packs too. And you're unlucky probably.

[ElvisDeadly]

It's random.

So there is no guarantee you get the card(s) you want from a booster pack.

I've opened boosters that contain 3 copies of the same card, it's just bad luck.

[crunchyfrog]

Just to be perfectly clear here, no.

Booster packs are just MORE drops. 3 of them to be precise. And just like drops, they are purely random.

I've had booster packs with three of the same card.

It's not a big deal though as they're still cards you can swap with others.

[MoonC A T]

You can get foils in booster packs as well. I usually purchase and open several hundred a year and about 1% of them, on average, contain a foil.

As crunchyfrog stated, it's not uncommon to get 3 of the same card, especially since A) each card is an independent event B) if the set only has 5 cards, then 20% each time is not astronomical to think that you would get the same card.