Don't you need a rune that removes all negative effects from a unit?! Especially in a game against Necropolis?! You probably confused it with the Magnadazer rune, although it can also be useful – for example, to steal vampirism.
Ideally, you should have all the runes, you never know what might come in handy.
Yes, sorry, I meant the Magnadazer rune. Well, stealing vampirism is basically the only option, and Inga almost always has all the runes anyway.
