What mixed hero class of the Haven faction do you like?

If a player chooses to focus on creating clones, then the Illusionist is definitely a better tactical choice than the Archmage.

But how is he better? The Archmage also increases the number of illusions by 20%, but he also buffs other spells. Although, what else is there to buff besides the illusion and clone spells?

Specifically, is it due to the Tactics skill?