Notes

Resource: Bloodlust - In addition to Mana, Warwick's abilities are fueled by Bloodlust, which is gained by every secondsuccessive basic attack on enemy Champions, and large/epic monsters.
Bloodlust lasts 5 seconds, and decays one stack at a time. Stacks up to 10 times. Basic attacks refresh the duration of Bloodlust.
(Passive) - Blood Scent: Enemy champions brought below 75% health leave a trail of blood behind that only Warwick can see. While on the trail, he gains one stack of Bloodlust every 3 seconds, and [8/12/16/20%] bonus movement speed (Amounts increase at levels 1/5/9/13). Abilities enhance the effects of Bloodlust.
If Warwick reaches 10 stacks of Bloodlust for any reason, he is sent into a Feral Rage for 6 seconds. Feral Rage locksWarwick out of all of his abilities during this time, but doubles the passive bonuses of his abilities to be doubled.

(Q) - Reaping Slash: [Passive] Each stack of Bloodlust causes Warwick's basic attacks to deal bonus 3/3.5/4/4.5/5 magic damage, and heal Warwick for the same amount.
[Active] Warwick slashes the area in front of him in a wide, short cone, moving enemies slightly in the direction his claw was moving and dealing physical damage based on current health of enemies hit and applying all on-hit effects, healing himself for 40/50/60/70/80% of the damage dealt. Warwick alternates claws with each successive use of this ability. Basic attacks reduce the cool-down by 0.5 seconds, doubled against champions and large/epic monsters.
Damage: 20/40/60/80/100 (+.75totalAD) + 4/5/6/7/8% of Current Health as Physical Damage + On-hit effects
Cool-down: 4 seconds
Cost: 2 Bloodlust; 35/40/45/50/55 Mana
Range: 100*, 250 distance

(W) - Waylay: [Passive] Warwick gains 4/5/6/7/8 movement speed for each stack of Bloodlust he has.
[Active] Warwick lunges in the targeted direction, striking enemies he passes. Warwick may not pass through terrain with this ability. Each enemy struck by this ability reduces the remaining cool-down by 0.5 seconds
Range: 500/550/600/650/700 Distance
Damage: 50/80/110/140/170 (+.8bonusAD) Physical Damage
Cool-down: 10/9/8/7/6 Seconds.
Cost: 2 Bloodlust; 60/65/70/75/80 Mana

(E) - Dread: [Passive] Warwick reveals nearby blood trails through the fog of war, each stack of Bloodlust increases the detection range by 50/75/100/125/150 distance. Champions below 40% are also revealed by this effect while within range. *(Feral Rage) Enemies below 80% are revealed by this effect.*
[Active]Warwick releases a blood chilling howl over up to two seconds, determining the range of the howl based on the duration it was channeled. Enemies within range of the howl are struck with Dread, reducing their movement and attack speeds by 14/18/22/26/30% for up to 4 seconds. While Dread persists on a target, Warwick gains 120/150/180/210/240 attack range against them, leaping towards them to close the distance, and pulling them backwards half that distance, consuming Dread.
Range: 500-1500 Distance
Slow: for 2 seconds
Cool-down: 14/13/12/11/10 Seconds
Cost: 3 Bloodlust; 80/90/100/110/120

(R) - Infinate Duress : [Passive] Warwick gains 1/1.5/2% additional health from healing effects per point of Bloodlust.
[Active] Warwick runs his prey down, violently tearing them apart. Warwick delivers 4/6/8 total attacks (+1per75AD/100AP), each one applying on-hit effects. Warwick consumes one of his alloted attacks to close the distance between him and his target by 150/200/250+(50% of totalMS) distance until he reaches his target, suppressing the target once he reaches them. Once he consumes all of his attacks against the target, he delivers an infectious bite to the target, draining health based on missing health over 3 seconds.
Damage of each attack: 50/80/110 (+1.0bonusAD) + on-hit effects
8/12/16% of missing health total
Cost: 4 Bloodlust; 100/150/200 Mana
Cool-down: 130/110/90 Second