- Which faction is stronger? (Necropolis, Tower, or Conflux)

I agree with mo next. When comparing Castles as such, the Tower outperforms both the Necropolis and the Conflux, but that doesn't mean it will always win against them in a game. It all depends on the size of the map, the resources available on it (it's quite difficult to develop the Tower quickly), and the strength and number of neutral creatures. For example, if the map is full of resources and has few neutral creatures, then the Necropolis won't be able to do much; there's nowhere to raise skeletons, and the Tower's army is much stronger. However, if the opposite is true, with practically no resources and hordes of bloodthirsty neutral creatures (especially low-level ones in large numbers), the Tower may immediately raise its hands in defeat – there won't be enough money for development or to buy an army, while the Necropolis doesn't even need to buy anyone; just defeat the monsters and get skeletons. As for the Conflux, it's an ambiguous Castle. On the one hand, it seems powerful (4 Phoenixes per week is no joke + magic for every taste), but on the other hand, all units except the second one are either the weakest or among the weakest in the second half of each level, and 4 Phoenixes don't fully compensate for this, in my opinion. In general, I would rate the Tower and the Necropolis as roughly equal opponents, with the Conflux slightly lower, but I repeat – it all depends on the map (and, of course, on the player's skill)