-if used on a defensive building (cannon/turret/crawler), it stops that building from attacking
-if used on a unit-producing building, it stops producing units (essentially, the player cannot give any commands to a corrupted building)
questions:
-if used on a tech building, does it not allow upgrades? What if it's used on a tech building that is in progress on an upgrade? does it freeze for the duration of the Corruption ability?
-if used on buildings with secondary abilities (crawlers, any terran ability that can lift), does it stop those buildings from being able to use their secondary abilities?
-if used on a morphing building (i.e. hatch currently morphing into a lair) does it temporarily freeze the morphing?
-can you cast it on buildings currently being built? If so, what does it do?