I really like the magic dragons because of their powerful Chaos spells (a druid summons them, and the player has 2 schools of magic at their disposal). I also like manticores, black dragons, titans, sorceresses, and gargantuans – in short, dragons, archers, and mages, because no matter how strong hydras and hippos are, they're already being harassed by the time they crawl over, and black dragons are just very beautiful and quite strong. Dragon lords are also handsome (only without wings :( ), but they're not that easy to find, and other creatures aren't inferior to them, IMHO.