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Here's the question:
Why didn't the Sphere of Vulnerability remove the immunity from the Golden Dragons, even though they were slowed down, and neither he nor I had any resistance artifacts? He had two spheres active: earth and fire.
If the spell is cast by the artifact's wielder, it affects all units on the battlefield. If it's cast by the opponent, it affects all enemy units, and only those of their own troops that would have been affected by the spell even without the Sphere.
So, if the Sphere was on you and you cast Armageddon, then the enemy's GDs should definitely be destroyed. If the Armageddon is cast by the opponent, he will leave his own GDs alive and unharmed.
