It seems red kayns sustain is going out of hand? please tone down his sustain and nerf him

I swear the only grevious wounds that is actually affective against red kayn is ignite, i feel like getting morello or executioners calling is not very affective because his sustain is way too much. Red kayn really needs a nerf, it seems worse than syla's w and even that got nerfed super hard but it is still broken. All im saying is, red kayn has that tank aspect already and with sustain and damage that cant be outmatched? I've been 1v4'd so many times because of red kayn and the lifesteal is just so stupid. He doen't even need a lifesteal item and can still 1v4 so easy but with a deaths dance it is 10 times worse. If his lifesteal could just be toned down like sylas w then it would be great but even still after a nerf I feel like it would still be busted