Posts from Playing as the Sylvan faction (Disciples 2).

Not really. And I like to use a feature of the game – to AoE the entire enemy unit with a single attack.
At the beginning, there isn't leadership for six units. I like to take a Knight, two Adepts, and a Centaur (a healer, if the map is difficult).

Centaur Berserker, Warrior hero, 2 Elf Bandits (if I manage to develop them), Theurg or Archon, sometimes I add a Healer.

Centaur Berserker, Warrior hero, 2 Elf Bandits (if I manage to develop them), a Theurg or Archon, and sometimes I add a Healer.

A completely ill-conceived and pointless build. But for single-player, it will do.

<army composition> sometimes I also add a healer

...In the front row? :)

I just love ice. Otherwise, I would have chosen Marauders.

Marauders are better.

They are more expensive and take longer to train.
And these are essentially mages. They also have decent stats.
And, as far as I remember, they have the highest initiative on the map, except for the guardians of the capitals.

For me, Elves are only viable on small maps, as their units at levels 2-3 are good. As for compositions, I'm not even sure... a Warrior hero + 3 archers specializing in Marauders, or a Ranger hero + an elemental archer + a healer + a centaur berserker. Only a Warrior can be a commander. With such a composition, you can at least move around, but duels with other factions without magic are lost 95% of the time. Elves are just too weak, even though they look good.