Make that zed can only return to his ult shadow when he dealt enough damage to kill the target
Riot has been trying to balance zed from making him having a delay when ults in by 0.5 seconds to return to his shadow, then buffed the W shadow length, then they nerfed the QSS´s (this is a big buff of course), then they nerfed his W cooldown, now they buffed their damage from hitting multiple shurikens but right now zed is just a gutted champion. i play a lot of carries and i know the frustation of getting popped by zed and feeling just hopeless to it, zeds gameplay has always been too low risk high reward in that sense and i feel this change its actually what he needs to make him viable and it offers a healthier gameplay overall, given that assassins should be high risk high reward champions. of course and give him decent stats again (damage, cooldown-wise) so that good zed players can get rewarded for good use of their deathmark outplay potential.
i know a lot of people doesn't like zed here but all champions should deserve the same love and be balance according to their concept