For the time being, it is Hoopa and Volcanion since they cannot be obtained through a legitimate way.
Feebas is the rariest pokemon but is also the most annoying pokemon seeing as how it changes fishing spots everyday and you have to fish for it on route 114 more.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.