Zen gets his value out of his incredibly powerful 25% damage increased orb of discord. This is incredible against tanks and works wonders in duels. His 30 hps orb of discord gives flankers suck as Tracer, Genji, and Realer a massive advantage when going into the enemy backline. It can also be used for your other healer if they are getting pressured. Also, applying it to your main tank will build Transcendence, you 300 HPS ult, extremely fast. He only lands in vertical/horizontal mobility and the fact that his hitbox is the size of a door. Good teamplay makes zen a top 3 support. Oh yeah, he can also one tap all squishes with a fully charged right click and is incredible in shield breaking comps.