What tier corresponds with corrupting a planet sized pocket dimension?

[Desmond253]

During the events of Legion Xavius uses the power of the old gods given to him by N'Zoth to corrupt the Emerald Dream, a pocket dimenson that represents what Azeroth would have been had the Titans left it untouched, This corruption was originally created by Yogg-Saron and has existed in the emerald dream for thousands of years within the Rift of Aln, a section of the Emerald Dream, repeatedly being pushed back by powerful Archduids such as Malfurion Stormrage. It is not specified how long it takes for the nightmare to corrupt the entire emerald dream and seep into Azeroth, but after the Heroes of Azeroth defeat Xavius the Emreald Dream is instantly cleansed save for a single flower seeping with void energy.

 

[Desmond253]

bump

 

[Antvasima]

I am not sure if this is quantifiable without a given timeframe.

 

[Desmond253]

I figured as much, but still had to ask. At best I can speculate it took anywhere from a couple of days to a couple of weeks based on the druid orderhall campaign, but that would be veering into headcannon territory.

 

[Antvasima]

I think so, yes.