Bouncing Blade - Katarina throws a dagger that bounces from enemy to enemy, dealing magic damage.
Katarina throws a dagger that hits up to 2/3/4/5/6 enemies, dealing 60/95/130/165/200 (+ ) (+0.35) magic damage. Each subsequent hit deals 10% less damage.
Cost
No Cost
Range
600
Killer Instincts - Passive: Katarina's attacks deal increased damage. Active: Katarina's next basic attack has a bonus effect. Bouncing Blade deals full damage to every target hit and reduces incoming healing to the target, or after using Shunpo Katarina takes reduced damage for 3 seconds.
Passive: Katarina's abilities and melee attacks deal 8/12/16/20/24 additional damage each hit.
Active: Katarina's next basic ability has a bonus effect.
Bouncing Blade: Deals full damage to every target it hits and applies 50% healing reduction for 5 seconds.
Shunpo: Katarina takes 15/20/25/30/35% reduced damage from enemy attacks for 3 seconds.
Cost
No Cost
Range
0
Shunpo - Katarina instantly moves to her target's location. If the target is an enemy, she deals damage.
Katarina moves to her target's location. If the target is an enemy, she deals 80/120/160/200/240 (+0.75) magic damage to the target.
Cost
No Cost
Range
700
Death Lotus - Katarina goes into a state of extreme focus, throwing daggers with unrivaled speed at up to three nearby champions.
Katarina goes into a state of extreme focus, throwing 10 daggers over 3 seconds at the closest 3 enemy champions. Each dagger deals 50/65/80 (+ ) (+0.25) magic damage.
Cost
Channeled Spell
Range
550
Voracity - After a champion kill or assist, Katarina gains 25 gold and her cooldowns are reduced by 15 seconds.

As a militaristic state, it would perhaps come as no surprise that the primary responsibilities of Noxian women are raising strong children and providing succor for husbands who walk the path of soldiery. There are some, however, for whom nurture is not nature, and Katarina is just such a creature. Born the daughter of the feared Noxian General Du Couteau, the girl was always more interested in her father's knives than in the dresses, jewelry, and other trifles that her sisters spent so much time fussing over. A childhood dispute soon unveiled her uncanny knack for bloodshed, and her father, ever the opportunist, happily fostered her killer instincts. After training under the tutelage of the finest assassins the mighty city-state had to offer, Katarina first cut her teeth performing assassinations in the Ionian War. There, her ruthless mastery of the knife and dagger combined with her sadistic temperament to earn her the title Sinister Blade, a moniker that would follow her for the remainder of her career. She is most famous, however, for her exploits in the campaigns against Demacia, especially those surrounding her engagements with the nation's champion, Garen; a rivalry that began when she recovered the remains of Sion from a vanguard under his protection.

With the demand for warfare somewhat arrested by the tenuous peace settling over Valoran, Katarina sought the allure of violence in its last remaining haven: The League of Legends. Some might say it was an inevitability that Katarina's chosen path would draw her to become a champion of the League, continuing to enforce the will of Noxus and bring prestige of war to her noble family. There, she continues to perform her bloody work - esteemed and reviled, feared and adored.

''The Sinister Blade of Noxus is like a black widow - beautiful, but deadly.'' - Garen, the Might of Demacia, following a skirmish in the field

Try using Killer Instinct's active and Shunpo to increase your survivability while using Death Lotus.
Try waiting until the other team is distracted with fighting your team, and use Shunpo to teleport into the fray and unleash a devastating Death Lotus.
Using Shunpo on an ally or allied minion can be a great escape tactic.