[Yossar]

Void Lord is great against Indy's but probably needs more attack and defense to be viable against other SCs. Carrion Dragon is really good because of recuperation and sleep vines but suffers late game (like all dragons) from a lack of equipment slots. A lich/saurolich spamming raise skeleton is pretty decent.

Other than that, most of the large, high-hp pretenders can make decent SCs with the right types of magic.