Sandersonia the Cobra Assassin [Medusa's Sister]

Part of the mythology hero series.

Sandersonia
Type : Ranged, Agility, Dire. Carry, Escape, Disabler

Lore:
The fateful day the masked assailants came to take Sandersonia was one she would never forget. They took her into the depths of a prison, where she witnessed death, executions, tortures, and drunken murder. She slowly watched the masked beings remove their masks. Sandersonia had a gift, a unique one out of the 3 gorgon sisters. She had the ability to morph her being into something else. As she looked at their grotesque faces, she contorted her face into a replica of the demons. Slowly she morphed her entire body into a clone, and snuck her way out. But her experiences in the prison was one she would not forget. She realized that a being of immortality was not worth having to live in this painful world forever, and became a mortal. She joined her sisters, and they became known not for their beauty, but for their merciless power.

Abilities

[Q] Cross Venom [Active]
Shoots a venomous dagger at the target, dealing damage and creating a mark. Activating this skill again teleports you to the unit. Attacking the unit will consume the mark and deal bonus damage.
Dagger damage : 45/65/85/105
Mark Damage : 60/80/100/120
Cooldown : 11/10/9/8
Mana Cost : 75
One second far away, the next second right behind you.


[W] Scale Copy [Active/Autocast]
When Sandersonia reaches a certain amount of HP or activates this skill, she creates a double of herself and becomes invisible. Her double does less damage but takes 100% damage. When the illusion dissapears or is destroyed, it explodes, dealing damage and silencing nearby units for 3 seconds.
Copy Duration : 5
Invis Duration : 5/6/7/8
Damage : 100/150/200/250
Radius : 500
Cooldown : 30/25/20/15
Mana Cost : 120
Sandersonia can create an exact replicate of herself on the battlefield.

[E] Shadow of Eyes [Passive/Active]
Sandersonia's next attack will silence the target and deal extra damage.
Cooldown : 14/11/7/4
Duration : 2
Damage : 20/20/30/40
Actively fakes Sandersonia's death, saying that the enemy killed her, but not giving them any gold or adding it onto the scoreboard. When this happens, Sandersonia goes invisible. If she reaches 100 health or less, this effect happens.
Duration : 6
Cooldown : 60/45/30/15
The glimmering eyes of Sandersonia create illusions in your mind.

[R] Masquerade [Active]
Sandersonia disguises as a visible ally or enemy. She is not seen on the minimap during this duration, and is revealed when attacking or using an ability. Her next attack will deal bonus damage.
Duration : 20
Cooldown : 45/40/35
Damage: 125/175/225
Mana Cost : 200/100/0
Sandersonia's eternal mask allows her to transform into any being.
[Rest TBD]

Adding ability lores next.

So... Assuming her gank combo is Cross Venom Teleport + Hit once + Masquerade + Hit once + Scale Copy + Hit Once + Shadow of Eyes, you'd do 700 damage (not counting attack damage), silence your opponent for half the time and remain invisible for 3/4s of the fight. The low cooldowns also allow her to repeat most of this combo quite easily after performing it. I'd say that this was imbalanced, but she would also get shat on by silences, dust and BKB, and fighting into multiple enemies without back-up should get her killed (after being fake-killed :P), so I'd say its fine.