I think for Order/Chaos should have a Hero unit(Like in Warcraft)
So, this unit will have levels (max level 5) on the left side of the HP bar
They will gain exp from killing units (EXP bar below of HP bar)
They also gain more max HP(as they lvl up), and they have a regeneration rate.
If the hero unit is killed, they can be ressurected.
The Hero will have a total of 3 skills.
1st skill is a 1 hit attack (Like shield bash) gained on 1st lvl
2nd skill is an aura gain (They will have auras) gained on 3rd lvl
3rd skill is an ultimate skill (Area skill) gained on 5th level
Probably the cost of hero unit differs from it's lvl (The players only need to pay if the hero unit dies)
1st lvl:500 Gold 100 Mana
2nd lvl:800 Gold 250 Mana
3rd lvl: 1200 Gold 450 Mana
4th lvl: 1500 Gold 600 Mana
5th lvl: 2000 Gold 800 Mana
The pop need for this unit is 5 pops, and the players can only have 1 Hero.