Blizzard needs to disclose more on the means of obtaining these cosmetic cards that they keep making.
The recent signature cards: Grom, Leeroy, Justicar, Rafaam, Barnes, Raza, and the Renathal signature, it is unclear whether they can be obtained from packs, or are they shop-only.
With Prince Renathal being made into a Signature, for example. It is offered in the shop for an absurd $40. And it is uncertain whether it can be obtained from pack openings or not. And if so, can it be from Wild packs? Castle Nathria packs?
One would assume it can be opened from these packs, but who knows whether Blizzard nowadays care to implement things carefully and consistently. – e.g. there are many Battleground skins in the client for years but never with a way to obtain them.
(And since the Caverns of Time packs, it is super confusing which cards can be obtained from which packs. For example Caverns packs can obtain League of Explorer and Old God signatures, which aren’t even Cavern cards. )
Blizzard need to officially communicate and makes things clear what packs can open, and how all new signatures can be obtained from pack or not!