Tactics against Necromancers.

It is best to use either mages or artillery. There are options for starting with a Rampart or a Castle with Grand Elves and Dendroids to block and Archers with Griffons. Gurnisson with Barbarians might also be a good choice. The core tactic is still a rush. With faster troops, you need to try to prevent the opponent from quickly building up their vampire upgrades! If the opponent has enough crystals and gems, it is better to restart immediately. In general, it is best to remove Necropolis and Conflux from the game as soon as possible when eliminating castles.