Expert take
Syndra is an excellent choice for players who like winning the game before the fight becomes chaotic. She rewards preparation: wave pushed, sphere placed, E held, vision controlled, target identified. She is not the easiest mage to maximize when the team plays randomly, but she becomes extremely reliable when the game revolves around objectives and positioning mistakes. Her real strength is not only killing a carry with R; it is forcing the entire enemy team to play slower because one stun can break their river entry.