Which monster do you like the most in Heroes 5 at level 5?

For a Warlock, the Hydra is the best option, and perhaps even the foundation of the entire army...

Well, I don't quite agree with that. Perhaps, this statement may be applicable in the mid-game, but not in the early or late game. In the early game (when magic is not yet developed), Assassins and Beasts are the strongest, and in the late game - Cherubim and, as support, Sovereigns (well, Assassins and Beasts, if they survive, also help a lot). And I almost never have enough money for Hydras. And, by the way, using Sudden Attack on Hydras when you have powerful offensive spells always makes me hesitate.