4 Rare and 2 Mythics are not possible to find in the Packs and figure as not part of the Expansion in the Profile. As you can see it figure like i've the complete collection still if i've not collected theese 6 cards in 4x, i confirm that the 1x of theese cards are made with crafting and not found in the packs. Maybe is becouse in the collection we can see that the goal is 240 Rare and 80 Mythics ( 60 1x and 20 1x) but Bloomburrow have 64 Rare ( so 256 4x) and 22 Mythics (so 88 4x) and probably is thats why 4 rares and 2 mythics fall out the count. (The numbers are the same of Outlaws Of Thunder Junction so maybe when they copy the script just missunderstand to fix the numbers...)