Best not Wanda's powers are very unpredictable can make the situation worse.
People are confusing things the problem is not getting rid of Mist but do it without starting a war with the Inhumans.
Some have given good answers and I myself have thought of some. Considering the technology and the magic that some individuals possess is not impossible even by the fact that they can use time machines but what would be the fun in that if the fight between species not happen.
While still ask me how to gather the greatest magicians of the planet and the best possible outcome was to move the school to the Limbo?
And for the record after reading Civil War II X-mens like less and less of Medusa.