@JordanC17 out of curiosity… How many “batches” of Purple Summoning Stones did you open in total, before you hit the batch-of-five(ten?) that gave Spooky and Keeper, and then the batch-of-four that gave Wulfgarok and Infernus?
I’m taken aback that Wishkiller says he opened “5000 at once” of each Summoning Stone colour and didn’t get a single Mythic. Perhaps doing a massive opening like that overwhelmed the payout calculation capacity?
I have noticed, for example, that if I open a massive number of Gold keys at once, I start to see specific repeated drops like huge numbers of Alchemist, Acolyte, Glade Warden, Warhawk, much more so than relative to say Zombie or Spider Swarm drops.
And Hammerhead (blue Common) started showing up on Friday Nov 3rd in my Gold Chests, for one day. I was thinking its behaviour was normal but three days later it seems to have disappeared again from my Chests. So if I wrap my head around this specific case (issues with COMMON cards dropping at near-zero rates) then I’m also pretty confused about ALL card drop rates in general.
By the way, the “large numbers of Alchemist and Warhawk” thing is appearing on both my iOS tablet AND on Xbox Console, which is how I noticed the odd drop pattern in the first place.