I'm using Skeelz for my elo deck right now and I'm at 22 stars 7 cards. I can't decide between Danae and Lorna. I think Attack manipulation is important in elo and for Lorna, it really depends on what bonus she's copying so she can be strong and weak. On the other hand 4 damage is better than 3. I don't know which one to put
skeelz decks are generally weak on damage, so the 4 damage is really important.
Danae doesn't do it for me. Attack Manipulation is nice but she still gets horribly beaten by popular cards like Mona, Wesley and Nellie. My personal opinion is that the cards should be prioritised like this:
Haven't played very much with the rest.
I agree with Frowns, that's the same mono order I'd recommend.