Who plays with which heroes in the Inferno faction?

I would recommend taking Nimues and Grog. Grog is easier to level up with "Call of Urgash," and he also has a long movement range. Nimues specializes in reinforcements, which is a big advantage. If you enhance his main ability, he becomes a very strong unit, around level 15-20, meaning he's useful early in the game, and he's not difficult to level up.