Angel's method is to use the "Exile Spell" to banish the foul black fog into the Void.
This is also typical wizard thinking.
For a wizard, when encountering dangerous, poisonous, or even experimental waste, or undead, as long as the wizard feels it is challenging to clean up, they will use the Exile Spell.
Angel naturally thought of the Exile Spell first.
However, when Angel actually went to practice it, he realized he had overthought it.
In reality, he could open the Exile Space using the Exile Spell anytime, but now he was in the Mirror Domain, and he used all his might but couldn't find the entrance to the Exile Space.
Ultimately, it was Khuntela who helped open the Space Rift.
According to Khuntela, the other end of the rift was the void corresponding to the Mirror Domain... but it didn't know which part of the Void it was.
This concept is somewhat similar to the Exile Spell, which also casts into the unknown Void.
