[SelfishGene]

Don't be fooled by the Knights of Avalon. They are strong and flexible, but expensive and fragile against human players wielding powerful Blesses and Magics. In a Dominions 2 game, i bumped heads, completely accidentally, with a massive 9N/9E blessed army of Neifel Giants. These "best cavalry" died without inflicting more than a couple of losses, which was such a catastrophic defeat it left me all but dead by turn 15 and useless for 30 more turns (a game where i came back having lost my capital and having nothing but 2 commanders and a mercenary!)

The Knights are basically "specialist" units, against things like the ethereal summons above. Use them sparingly and carefully.