Hi guys,wazzzzzzzz up?Its my first guide and i m not native speaker so dont care about mistakes.
I will tell you something about one of the most hated bit*h*s in the game and one of the best ganger/team raper.

Background story.

Twitch,the Plague Rat

The city-state of Zaun is a twisted realm of science, mercantilism, and magic run amok. While the young science of techmaturgy does much to advance civilization, its research and use in Zaun pushes the boundaries of morality on a daily basis. Zaun, choked with pollution from the countless factories and laboratories that spew waste into the environment, suffers greatly. As polluted as Zaun is above-ground, its subterranean levels are far worse. All of Zaun's runoff waste pooled together in its sewers, mixing into a toxic and mysterious concoction. A single plague rat rose from this alchemical nightmare - Twitch. Unlike his lesser evolved cousins, Twitch became as sentient as anyone else... provided they were as insane as he. A seeming byproduct of the evolutionary brew that spawned him was maniacal insanity, albeit in a functional form.

Twitch came to the League of Legends to represent himself ''as the only one of his kind'' on the Fields of Justice. Since then, he has found a generous benefactor in the city that gave him his evolutionary sentience - Zaun. Twitch is one of Zaun's premier champions in the League, and as such he fights for Zaun when political disputes between Valoran's city-states arise. Twitch has publically stated that his goal is to gain enough influence and materiel from his work in the League to try to recreate the process by which he gained his sentience. While many challenges lie ahead in his quest - one of the largest being his own insanity - were he to succeed, it would mean a bold and brazen step forward in the evolution of all of Runeterra. Zaun has pledged its support for Twitch in his quest, though it remains to be seen what Zaun's ulterior motives are in the matter.

''The existence of Twitch proves that anything is possible on Runeterra.''
-- Heimerdinger

Pros:
-Huge AoE
-AoE slow
-Invisible with incredible atack speed
-One of the best useful ultimate for farm/gang

Cons:
-Glass cannon
-Without your ulti not too good team raper
-Biggest weakness oracle,ward,TF

Abilities
Ambush - Twitch hides in the shadows, waiting for a nearby enemy. If he attacks, he will gain bonus attack speed.
After 1.25 seconds, Twitch becomes stealthed for 20/30/40/50/60 seconds. If Twitch attacks a unit while Stealthed, he gains 30/40/50/60/70% attack speed for up to 10 seconds, depending on how long he was stealthed before attacking.
Cost
60/60/60/60/60 Mana
Range
20
Debilitating Poison - Infects all nearby champions with Debilitating Poison, slowing their movement speed.
Slows nearby enemy champions' move speed by 30%, plus 6% per Deadly Venom they have.
2/2.6/3.2/3.8/4.4 second duration.
Cost
80/80/80/80/80 Mana
Range
1200
Expunge - All nearby enemies secrete Twitch's toxic venoms from their bodies, dealing damage for each stack.
Deals 30/60/90/120/150 (+1) magic damage to each nearby poisoned enemy, plus 20/30/40/50/60 additional damage per stack of Deadly Venom applied to them.
Cost
90/90/90/90/90 Mana
Range
1200
Spray and Pray - Twitch closes his eyes and fires his crossbow, spraying powerful piercing arrows ahead of him.
Twitch's attacks become long range, passing through units, and he gains 15/25/35 Attack Damage.

Lasts 12 seconds or 5/6/7 attacks.
Cost
150/150/150 Mana
Range
1200
Deadly Venom - Twitch's attacks infect the target with Deadly Venom, which deals damage each second, stacks up to 6 times, and lasts up to 6 seconds.

Early
Try to last hit at last 99% creeps. If u are in mid dont try to harass if u don't play again noobs. Since u got 6 level u can go gang.
Mid
Time to gang. Always watch for enemies , who has low hp. Always let ur teamate intiniate the batle.Always get the best position for ur ultimate , that means stay behind ur enemies and hit as much enemies as u can. Whenever ur enemies try to escape use ur Debilitating Poison to hold them in position. Stack as many poision counter as u can a dont use expunge immediately ->just use it for kills. U can also use ignite to finish that guys. if u are outrange of expunge flash there and use it to finish .
Late
Try to get ur items. If u get all of them u got 100% critical chances . Again in big teamfight NEVER EVER GO THE FIRST LIKE CHUCK NORRIS!!
try to splash ur fuc***** critical strikes.BUY ELIXIRS! Enjoy of butt sex.

Guys, Good luck and have fun. I'd like to see ur comments and advices.Keeps it up and enjoy the game!

I' ve made this guide with my best friend Teakill. So thanks for reading my guide ^^