Necropolis versus Orcs.

Subordination is great, and we can cast Vampirism on our dragons. Then, their "wrath" won't be scary anymore.

Yes, orcs don't care about vampirism on undead; a couple of hits and the stack is gone. And Necropolis dragons are just a misunderstanding, not a unit. If there's no subordination or at least berserk, you can just leave the game.