stormahawk

I was thinking of adding a tier 5 to demon race and making all tiers except tier one magic immune. I was also thinking of raising demon prices. Here is how it will look:
Tier 1: 3.5k -units unchanged
Tier 2: 6k- magic immune, 30% critical stike and 15% unit will have poison attack
tier 3: 12k- Immolation, magic immune, spiked armour
tier 4: 17k- magic immune, melee, 10% chance to random one of the following ablities: poison attack, critical strike, bloodlust (auto cast), bash, vampiric aura (25%), AOE heal (like obsedian statues in ladder, except the death dragon willl heal 100 hp at a decent mana cost), and maybe other abilities
Tier 5: 25k- Void Dragons. Starting Hp 6k. Starting damage 400. Starting armour 65. Magic immune with the same 10% for same abilities as tier 4.

What do you think of my idea? Demon right now is normally overpriced, yet undead is way better. I plan to make demon more worth the price. Also, I thought of making all the tiers except tier one have upgradable undead frenzy like undead.