[2020] Has the chance for Mythic rares decreased?

@KingArrudar#10084:

I opened 20+ packs yesterday, and all I got was a single mythic wildcard.
WOTC decreased the amount of stuff you get from mastery passes.
did they decrease the chance of opening a mythic card in packs?

We have not adjusted drop rates. Please check out our promo page for more info!