Play against Necropolis.

So, I'll tell you a story now...
This game was 2 vs. 2: Sylvan + me against Necropolis + Dungeon. We were dominating our opponents and decided that I should try to fight the Necromancer... But things went differently; I encountered a player with a build designed to counter Necropolis. And Sylvan had to fight the Necromancer... In the end, our team still won :) That's how it happened.