Hey guys,I'm Miplinator and I'm here to tell/show you how to play Warwick as a devastating semi-tank,or if you want you can even go slightly snowball.I am quite experienced with Warwick playing easily over 300matches with him,winning about 225 of them...With this build,even though it might seem slightly odd,works perfectly well with his ulti (Hextech)gives him the bonus AP to make your ult hit the mark of 1000Damage, and then after that having a very low cooldown,nearly a minute at full build.

Warwick was once a man revered for his ability to track down human specimens for the darkest types of scientific research. When his ambitions exceeded his physical limits, he drank a dangerous elixir to transform himself into an unstoppable manhunter. His newfound strength bore a heavy price.

Before his transformation, Warwick found his calling in Zaun as a "procurer" of human test subjects. Known for his crafty methods and ruthless determination, people regarded him with a cautious mixture of fear and respect. As his reputation grew, so did the demands placed upon him. His clients wanted more rare and dangerous specimens, and they wanted them sooner. To meet their demands, Warwick needed the strength that transcended his limited human form. His longtime friend, Singed, devised a powerful formula. The recipe called for three critical components: silver from the Shadow Isles, the fang of a Balefire dire wolf, and the heart of a celestial being. Warwick tracked down the first two in short order, but the third proved a much greater challenge. He traveled to Ionia to trap Soraka, a creature believed to be a child of the stars, but she discovered his ploy and drove him away with powerful magic. Unable to tolerate his failure, Warwick returned to Singed disfigured and furious. He demanded the chemist's incomplete potion, but Singed warned him that the results would be unpredictable. Ignoring his friend's warning, Warwick drank the concoction. The brew transformed him into a creature both man and wolf, infusing him with raw strength and heightened senses. Exhilarated, he immediately began testing his newfound power. Each day his instincts became sharper, but his human half slipped further away. He could feel himself losing control: though he always got his prey, he often failed to bring them back alive. Now he seeks the blood of Soraka to stabilize his transformation before his mind gives way to the feral urges of the beast.

"Eventually the beast catches up with all of us."
―Warwick

Warwick is pretty fun to play,and is great for your team, he can assist with ganks, jungle,and if you don't have one, he can even go semi-tankwick.He can stop "channeling" ults, like Miss Fortune's Bullet Time or the life saver move-stopping Requiem Warwick is just generally awesome and is good at capturing scared Yordles,because that seems like everyone's favorite sport right now...

Pros
+ Great Life Saving Ult
+ Quick Jungler
+Ult uses hit-on affects like Black Cleaver
Insane Sustain-not so much recalling because of Eternal Thirst
Jungling=more XP-solo jungle,solo top + more global gold

Yes,masteries...It might seem very odd skipping out on Executioner but its not worth while because you can chase them very easily with Blood Scent.