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

If we're talking about which faction is stronger, I wouldn't give anyone a clear preference (although I haven't played as the Lords of the North or the Orcs yet). The Knights are very strong. I once managed to get lucky with them – the enemy was completely overwhelmed. Add to that the speed boost, and the enemy's turn is over before you even see it. And with resurrection (not to mention the Guardian Angel), they become incredibly powerful. The Demons are devastating in terms of summoning. When I was playing through Agrael's campaign, he leveled up so much that he could summon a huge number of creatures. When the hero is strong and the enemies are strong, even one extra unit on the battlefield can make a big difference. Even if that unit is just a simple crossbowman. I liked the Necromancers in long campaigns. They're not that great on the battlefield, but a large number of archers can be very effective (except for the enemy, of course). The only thing that raises questions is the effect of the tent. You're not sure whether to be happy or not when it says "Zombie restored 30 health, 0 creatures resurrected." I really like the Dark faction. Yes, they don't have a very large army, but with luck, powerful magic, and assassin's poison, they are a formidable force. And the Elves, too. Especially when the druids cast free spells before the start of the battle. And the Ents can bind moving objects, and then you just shoot them with arrows until you get bored. And the Mages with their Titans are just beyond comment.