In your opinion, which faction is the strongest in Heroes 5? Let's discuss the advantages and disadvantages of each faction.

Necromancers also rely on brute physical force. But their strength is limited, so they are just a pile of stinking and decaying bodies, overwhelming with their mass.

Brute physical force? Think about what you're saying. With the spellcasting abilities of Necromancer heroes and the ability to replenish mana by dealing damage to enemy stacks, they become excellent spellcasters, plus they have undead minions, and it's not just darkness; chaos and summoning magic work well for them too.

If you don't like Necromancers, just say so, but don't say they are weak, because that's not true at all.