Talk:Lissandra/@comment-3013755-20130723111826/@comment-8506165-20130730180710

AP Sion worked by having his shield scale ridiculously so he basically took no damage in trades and won every one - falling off lategame because enemies could actually destroy his shield in teamfights before he could detonate it. It's why Riot consider him toxic - he had defense and offense all in one move that scaled with the only thing he bought.

Liss brings more utility and better teamfight presence but doesn't have the guaranteed "I'm going in to trade now and there's nothing you can do about it" of AP Sion.