Team Mystic in Pokemon go has 43% percent of all players on their team the leader of said team is Blanche. Blanche wishes to find out how evolution works and if you choose this team Pokemon evolution costs less candies! So that is one reason why some people would love this team but team Mystic has alot going for it. Due to the color blue being the world's favorite color and the team being in the center of all 3 teams it makes sense why people would choose it. So that is kinda all I have to say and don't worry I'll cover Valor and Instinct in the 2 next works.