The team at StarCraft: IncGamers has made a video and an article, showing an "exploit" of the Zerg Infestor's ability "Neural Parasite".
It allows the Zerg player to use units of the other two races, dealing an attack with all top units, including Ultralisks, Battlecruisers, Carriers and a Mothership.
However, there's some labour involved in doing so.
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