Lissandra Ability (LoL): Glacial Path

The claw moves at 700 speed. You have 1.5 seconds to teleport. Casting other abilities, with the exception of a self-cast Frozen Tomb, do not interfere with the ability to teleport.

Turret aggro is not lost with Glacial Path unless you blink out of range, unlike Flash.

You can move in the opposite direction from the claw and still be able to teleport. There is no "leash range" that prevents teleporting as far as I can tell.

Most importantly, you can cast this while snared by stuff like Dark Binding. You won't be able to teleport until the snare wears off, but this is absolutely HUGE both when escaping ganks and when chasing somebody like Lux who can turn around and Q you.