When playing kayn, it is essential to path correctly and to gank whenever you can (especially early game). The normal path on Kayn depends on what form you want. Most people that want red form will start Blue, Wolves, Raptors, Red and gank top or mid level 3. When going for blue you start Red, Raptors, Wolves, Blue and gank bot or mid level 3. The basic kayn paths with no leash are Raptors, Red, Krugs, or you can do Wolves, Blue, Gromp. At that point one kill should give you at least a quarter to a third of your form. Reset and do this a couple more times and you should be good.

Once ten minutes hit, you should have form by then, and if you don't, you are most likely falling behind when it comes to blue kayn. The reason why is because blue kayn needs to snowball early game in order to carry games and destroy kids.

When it comes to red kayn, just play him like a normal bruiser because this champion has LOTS of healing, especially when you get spirit visage and deaths dance.