The Brotherhood of Gix treated machines as sacred and offered access to power beyond ordinary Dominarian craft. Behind that devotion stood Gix, a Phyrexian demon who recognised the value of the conflict. Mishra wanted enough strength to defeat Urza; Phyrexia wanted dependence, information and eventually a world opened from within.
Mishra’s army incorporated dragon engines and other devices whose origins he could not safely control. His body and judgement changed as the alliance deepened. What looked from a distance like technological advantage was also a process of replacement, one compromise making the next feel practical.
Urza saw the danger but not the lesson. He understood that Mishra’s forces were becoming Phyrexian, yet continued to measure his own response by whether it could win. Recognising corruption in an opponent did not stop him from treating people and land as components. The brothers differed in allegiance, but both had learned to reduce consequences to engineering problems.