lol, Well, from my original list and the suggestions in the this thread, I think these are good for it:
Sonic Blast(Sky Wall): Forces all enemy air units away and out of range from the Command Center.(Is Activate/Deactivate type spell, costs energy per second) - stickynote
Best Leveling would be less energy per second
Iron Strength: Temporarily makes all allied units near-by invincible, forcing enemies to re-target the Command Center. - LosTZealoT
I know you've been trying to remove Invincible Spells, but seeing as the Commander will serve as a tank anyway, this will only reinforce its purpose.
[-Swarm of Workers: [While Lifted] Creates a bunch of SCVs under the Command Center who can attack and repair the Command Center. - LosTZealoT
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[-Temporal Spawn: [While Landed] Spawns like a normal computer Spawn Point. Lasts as long as the CC is landed. - LosTZealoT
After reading the posts about how CC should have more spells, I thought that doubling these two up might be cool. If it were say the wraith spell, you'd build the Wraith and if you were landed, it would use Temporal spawn, if you were lifted, it would use Swarm of Workers. These are both spawn spells so its not that hard to get a grasp of. Temporal spawn and Swarm of Workers would both create more SCVs/spawn units with Levels.
Particle Thrust: Propels the Command Center forward at the speed of light. (Is Activate/Deactivate type spell, costs energy per second)- Pigy_G
Best Leveling would be less energy per second, maybe distance traveled? I think that he recommended a mobile grid to make this work, you'll have to talk more to him about his vision
Crushing Weight: When Landing, the Command Center deals damage to underneath/nearby enemies. - LosTZealoT
I think this shouldnt be a spell per se, but as the Command Center has no formal attack and cannot be upgraded, it would be good it when it landed, it does something more than make the units beneath float.
I think this is a good list, it gives the hero a good range of spells, ways to deal damage, move and serve as a tank unit, taking the damage for its friends. I think it should have good armor, but it needs high health due to Terran burning effect. Of course, the SCVs should have good health/low armor or low health/high armor and decent attack. Repairing w/ SCVs should cost energy(Im assuming your using like gas/ore), but its ok if it doesnt.
None.