User blog comment:Elecissa/Future Katarina changes and all Katarina post/@comment-24704296-20150120151247/@comment-5077844-20150120180709

how does it give you more time to react? Her passive stays the same. Her E will go off CD as soon as she skills somebody. they jsut added an effect that gives her more mobility wthout relying on a kill.

It's her new way of trading, since rangepoking with Q isn't efficient anymore. You Q them, E-aa-W them, maybe throw in a few autos and then E out after 3 seconds.

Basically it encourages going all-in on your enemy and gives them 3 seconds in which they have time to deal damage to you. 1.5 seconds of those she takes reduced damage (only by 10% tho).