Vayne, the Night Hunter Approaches!

Vayne's abilities have officially been revealed and I am not sure what to think! She seems like a ranged Master Yi with a splash of Poppy. Sounds fun right? I was actually sort of worried this champion would be a little bland, but her combo's and abilities look quite entertaining. Between her punishing true damage based on HP, her mobility, and her knockback, she also seems like quite the anti-Tanky DPS champion.

Lore: 

The world is not always as civilized as people might think. There are still those who would follow the blackest paths of magic and become corrupted by the darker powers that flow through Runeterra. Shauna Vayne knows this fact well. As a young privileged girl in the heart of Demacia’s elite, her father tried to convince her of the constabulary's ever-vigilant eye. Young and naïve, she truly believed that her world was one of perfect safety… until one night, when a twisted witch took interest in her father. The malevolent woman overcame her father's conciliar guard, then tortured her family before murdering them. The young Shauna escaped only by hiding herself and then fleeing once the hag had departed, plagued by the screams of her loved ones as she ran. A burning hatred was born in her that day, one that could never be denied.

Vayne was able to take care of herself using her father’s money, and she began to train as soon as an instructor would have her as a student. By the time she was a fully grown woman, she had become a grim warrior. However, the fields of battle were not to be her home. Demacia needed a protector, one who hunted those lost to the darkness. Shauna used her family's contacts to become the first Night Hunter, and now her prowess is the stuff of legends. It is said that those who practice the black arts quake when they hear that the Night Hunter is on the prowl. Despite her crusade, Shauna has looked at the League of Legends in horror. There are champions who have clearly lost themselves to the blackest of magics, and who have been embraced within the League even though they should be put down for the safety of all. The time has come for the Night Hunter to execute her secret mission – to purge the League of Legends.

Not all shadows are to be feared. At least, if Vayne has her way.

Abilities:

Night Hunter (Passive): Vayne ruthlessly hunts evil-doers. She gains bonus Movement Speed when moving toward nearby enemy champions.

Tumble: Vayne tumbles, maneuvering to carefully place her next shot. She rolls toward the cursor and her next attack deals bonus damage.

Silver Bolts: Vayne tips her bolts with a rare metal, toxic to evil things. The third consecutive attack or ability against the same target deals a percentage of the target's maximum Health as bonus true damage. (Max damage vs. Monsters is capped)

Condemn: Vayne draws a heavy crossbow from her back, and fires a huge bolt at her target, dealing damage and knocking them back. If they collide with terrain, they are impaled, dealing bonus damage and stunning them.

Final Hour (Ultimate): Readying herself for an epic confrontation, Vayne gains increased Attack Damage, stealth during Tumble, and quadruple the bonus Movement Speed from Night Hunter.

 - Average Gatsby, Riot Intern Team, via the official forums.