Since Videos are being taken down
Copy paste of /u/dumnem comment:
Her kit:
P: Assassin's Mark
Dealing spell damage to a champion creates a circle around them.
Crossing the circle causes Akali's next attack to have doubled range, deal X +Y +Z bonus magic damage and restore 10 energy.
[Press shift for more information.]
Q: Five Point Strike 1.5s cd 100 Energy
Deals X +Y +Z magic damage. Enemies at the tip are briefly slowed.
If cast near full energy, akali also heals for 22.
At rank 5, deals an extra +Y +Z damage to minions and monsters.
W: Twilight Shroud 17s cd RESTORES 40 Energy
Drop a spreading cover of smoke lasting 5 seconds.
The smoke obscures Akali from enemy vision and grants her 20% movement speed.
Entering or exiting obscured extends Shroud's duration.
(NOTE: Immune to all forms of reveal. Even turrets. Still shows shimmer from damage and Lee Q reveals until he activates second Q.)
EDIT: Since the video is gone I want to note that the smoke acts like actual smoke and spreads to cover empty terrain, and isn't just a pure circle. It spreads enough to cover most of baron pit.
E: Shuriken Flip 16s cd 30 Energy
Flip backward and fire a shuriken forward, dealing X + Y physical damage and marking the first enemy or smoke cloud hit.
Re-Cast: Dash to the marked target, dealing the same damage.
(NOTE: Looks like it has massive or possibly unlimited range, and may be thrown into Shroud to market it and dash to it much like an enemy.)
R: Shadow Dance 120s cd no cost
Two dashes: The first micro-stuns and deals 120 + Y physical damage.
The second executes, dealing 120 + Z to 300 + Z magic damage based on missing health.
(NOTE: Free dashes, as in not reliant on targets. Looks like medium-ish range.)