Grazul, because she heals and blocks ailments at v. fast speed. She’s a strong offensive support hero.
Azlar would be my 2nd choice because he hits hard even if he’s slow. Good match damage and skill damage, and his burn is great – but maybe I’m biased since I use him with a red ninja troop and makes his burn very powerful.
I didn’t really like Baldur in Beta. The best part about him is the protection against mana reductions – something that is handy in Vanaheim Hard difficulty, against those heroes and against Neith, Guinevere, etc. It’s a bit niche in this meta but it’s notable. That aside, he’s just too passive for me to really consider.