The history of the Land, the testament of the Creator, is that he created the Land to be perfect, living, beautiful. But he found defects, vile creatures, unforgivable tampering. In a rage, he cast A-Jeroth into the Land during its final forming and sealed him in the Arch of Time.
It's a lie.
It's all lies.
Foul isn't imprisoned in the Arch of Time because he tampered with creation of the Land. He's there because the Creator was pissed at him.
First off, it doesn't make any sense. The Creator is strong enough to imprison A-Jeroth. He would have much better answers to this tampering than locking him into something he loves to do harm he cannot protect against. Locking A-Jeroth into The Land was a mistake, an error of judgment made in a rage.
Second, there was no damage to the land. In ages past, long ago, there were trees and viles and wonders. Ravers were created later in the Land's history, after man destroyed the One Forest. Then the Land created forestals to control the Ravers. A great battle caused the Land's Drop, and poisoning and theurgy created that which spawned the Lurker.
All of this came deep into the Land's early history, long after A-Jeroth's imprisonment.
Third, A-Jeroth isn't the only being of power imprisoned here. There is exactly, exactly one other.
Her name is Diassomer Miniderian.
While the Creator was busy making the land--busy, distracted, and neglectful of other things--his wife became lonely. Mate of Might, all stars' and heavens' chatelaine, power over realm... who would that describe?Diassomer Miniderian,
The Mate of Might and Master's Wife,
all stars' and heavens' chatelaine,
with power over realm and strife,
attended well, the story tells,
to A-Jeroth of the Seven Hells
Well. She found someone to relieve her loneliness.
The bane is Diassomer Miniderian, the unfaithful wife of the Creator. She is imprisoned in the Land for her infidelity with A-Jeroth, similarly cast into the Land for the Creator's ire. That is the truth behind both of them.
And she has now escaped. Maybe they'll make up.