Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This is my first guide ever so it wont be the best guide ever but i am just trying to help out.
My runes are builded for attack speed and a little bit of cooldown reduction.
My mastery's are 21/0/9.
Summoner spells are ghost and ignite i use ghost for running after them and slowing them for my team and i use ignite so i dont think OMG HE GOT AWAY WITH 20 HP!.
Early game: The first item i buy is Vampiric Septer: in combination with your 32% attack speed increase you will regain a lot of health in the laning fase by lifestealing minions.
If you're playing good you will be able to take your first kill fast, when you got it you can go back and get Emblem of Valour and/or Boots of Speed.
By now you would have reached lvl 6 and you can ask yout teammates to ping enemies with low health, so you can finish them off with your arrow.
Mid game: Once you got a few kills you will be able to get Boots of Swiftness.
Now you can go get the golem or the dragon buff, keep killing them for the buffs and gold when there back.
Make sure you get Madred's Bloodrazor as soon as possible, so you have the 4% of maximum hp bonus damage with your physical attacks.
After this you should go for Phantom Dancer for the extra movement speed so you can catch up with enemy's and slow them
Killing the Lizard for red buff could come in handy to as this slows enemies.
End game: There wont be an end game if your team played well.
If you played well you would be finishing Infinity Edge by now.
Wich means you have 63% crit chance now so you can do massive damage and easy kill 2 enemys at once.
If you got Last Whisper you are able to backdoor and finish the game.
1 on 1 tactics: Against an melee champion you just slow him, you could use your ulti to stun him then use ignite and keep slowing him till hes dead.
Against an ranged champion turn you Frost shot on and shoot then run a little back so he or she can't hit you then shoot and keep continuing that untill hes running back to his tower then use your ulti to finish him.
Teamfight tactics: Remember your squishy and you're easy to kill so stay back.
Once one of you allies starts a teamfight you need to trow in your utli so you stun/slow your enemies so your team can make a kill.
Then use Volley while Frost Shot is active to slow as many enemys as possible.
Use ghost if you need to chase someone and slow him so your team can reach him.
Thanks for reading my guide i hope you liked it.
Please comment if i did anything wrong and rate if you liked it.:)