If you like pirate warrior (and after the shaman nerfs, it may be quite strong), Ancharr is a must craft.
If you like handlock stuff, Zzeraku is pretty decent.
Flik Skyshiv is just a good rogue card.
And if you want to do reno dragon mage stuff or even just regular dragon mage, Malygos is really good.
Alex is so good and so versatile that she is probably one of the safest crafts if you already have stuff like Zephyrs and the other highlander reward cards. Though I’ve also had fun making EVIL class highlander decks too so the highlander class cards aren’t mandatory.