The Masterys grant highest possible dmg output, fast recall for emergencies and some bonus walkspeed. As a assassine u have to burst high dmg and the swiftness helps to reach enemys faster without the need of boots at lvl 1. Thats it so far.

High dmg output with some def in addation to cooldown reduction provides a successful early game phase. Armor pen. comes in handy in late game so u deal dmg to tankier Champs like irelia.

Dorans for bonus health and dmg at the beginning. Brutalizer for cd reduction and dmg also for amor pen.. Sheen in addition to your Q skill to make it more effective. Creeo till u get to Bloodthirster so your dmg output rises. Then start to get tankier with Warmogs and Atams. If needed u can upgrade your boots sooner. Yomis and Trinity u get significant boosts which coem in handy when ur out of skill shots because u get a great amount of atk/crit and aspd.

U use Q-E-W-Autoatk-R and finish it with ignite if u have to.

In Teamfights u wont initiate but wait for the right time to target the low health enemy champs. Make sure to kill these so supporter and ad carrys are done early.

Farm till lvl 6 then start to roam. After u get your sheen start to farm again till u stack your bloodthirster full. Thats it. Rest is up to u ^^