All of the signatures in this cycle of intro decks are unique in that they're colored in faction. This means that any cards that care about class type can interact with these. For Stella, presumably you'll be able to grab her sgnature from the discard with Resourceful. For Winifred Habbamock, this happens to be a skill card as well, so Daredevil, a card that as far as I'm aware is the genesis of Wini as a character in this universe, can grab this.
As far as review/analysis goes, what else is there to say? It's six wild icons, which is more than Strange Eons even allows for when you make custom cards. Commit it to a big test where you want to stack some major effects, or use it to soften a really terrible test, the choice is yours (or not, as the case may be with Daredevil).