Questions about Seismic Leap:

Will it proc CB or DS?
Does it use aspd or fcr? (Seems like fcr but almost unnoticeable)
Will -% physical resistance work with it?
What is the % chance of knockback?
Is there any benefit from being a certain distance from the target? (More dmg from further away for example)
Any auras or curses effect it?
Is increasing the skill level the only way to strengthen it?