Tactics against Necromancers.

Conflux is a decent castle, but with its own quirks. It's a real counter to Necropolis.

That's exactly what I'm saying. That's why no one lets their opponent play with Necropolis or Conflux in tournament games. Then there's Rampart, Dungeon, and Castle – but that's a matter of taste, who you choose to keep and who you play as.