Master Yi nerf needed
Q makes him invulnerable, cooldown lowered by basic attacks (just build attack speed) W makes him not only heal for a ridiculous amount over a lot of time, but it also mitigates up to %70 damage which is op on an ad assassin E makes him just do ridiculous damage in general R makes hum move so fast, light has a hard time catching up to him, and he cannot be slowed AAAAAND he gets ridiculous attack speed (which mentioned earlier makes his Q have basically no cooldown) aaaaaand his passive makes him do more damage
Why hasn't Riot nerfed him yet?