The helmet weighed heavily on Lavender Crystal's burly shoulders, chafing despite her smoothe crystal hide. Despite this pain she was glad for the helm which was a necessity if she was to resist the powerful mind-distorting magic of the Equestrian Oppressors and the malicious sorceress who led them. Lavender internally praised the noble Lord Sombra internally for his ingeniousness in devising such a marvellous device which could end the oppression and Free her forever from Tyranny. Lavender knew that Tyranny was Bad - an insult to be hurled at the enemy along with her magic and life if necessary. Lavender remembered that she had once attempted to argue that Tyranny was an idea and had even accused Lord Sombra of it! That was when Lord Sombra made her wear her helmet in order to stop the Equestrian oppressors using their magic to cloud her mind and make her use Tyranny as an idea rather than a weapon. Lavender was simpy glad that Tyranny would end when Oppression was ended, which would happen when the Equestrian Oppressors were no more.
Lord Sombra smiled as he withdrew his mind from his crystal lieutenant and once more marvelled that ponies had never unlocked the true power of the Crystal Heart as he had. As a creature of darkness he didn't fully understand why the Heart's message resonated so strongly with the Crystal ponies, but he certainly appreciated its results! His power flowed through the heart and was amplified by the Crystal helmets that each of his subjects wore, ensuring that they never deviated from his purpose. He was glad that the heart and the strange values of these ponies could be so easily corrupted, although it irked him that he couldn't so easily conquer the minds of the Equestrians who opposed him. That wouldn't matter, though, once he had won.