-The first avatar you want to banish and use will be the pathfinder till the illusion is dispelled.

-The second stages of avatars next in line would be either interrogator or sorcerer for more spell draw.

-The third stages of avatars would be for abilities such as necromancer, witch, bladedancer, or the animist.

-The last and for defense would be to use Ironclad.

*Mephistopheles is there when you have enough sites to just start playing evil after you built up enough of an arsenal to start putting pressure with minions.