About the latest Cass changes.
http://i.imgur.com/BdN0iJT.png I can't believe you really allowed this to happen.
Cassiopeia already had a hard time managing her mana after the last nerfs to her overall mana-costs, since then Tear has become a mandatory item on her and even that doesn't cut it when it comes to extended fights which leave her oom instantly. So why are you allowing another nerf to hit her? Hasn't she suffered enough lately? She already gets stomped by all the fotm-picks out there, if you ask me she could use some buffs herself.
She literally gets weaker the longer the game goes on since it's incredibly easy to erase someone from the map during lategame when everyone's at their fullest potential. Due to Cassiopeia's inherently squishy and immobile nature she's logically the prime-target in teamfights. Despite that she's supposed to be the strongest lategame carry out there and you just made that fantasy even harder to achieve.
Even lategame marksmen deal more damage than her if you consider the sheer impact of criticals and the fact that autoattacks cost no mana at all, neither do they require any previous conditions to be fullfilled like her poison-trigger. A loss of 12% is a HUGE amount when we're talking about four digit numbers of AP - numbers which she desperately needs due to her disappointing ratios.
I seriously hope you're going to address some of those issues in the next patch. Because Cass really could use some help right now.