Max tried to differentiate the pros and cons of the four class specific moves that he could choose from and after a lot of introspection he was able to make a list.
Max knew the move [ Ice World ] from Omega, a very famous player named ' King Of Ice ' used this attack and there were a lot of legendary clips of him on the forums using this attack in large scale battles.
The move was very powerful and could completely halt troop movement for a few seconds for strong troops while completely incapacitating weak ones.
Many fighters were reluctant to fight the king of ice at close range because of this exact move and while it was an AOE spell that did not deal immense damage by itself, it did create an opportunity to deal immense damage when used correctly by incapacitating enemy movement.