[GAMEPLAY] Cassiopeia Passive

The Cassiopeia passive states that at 400 stacks she will be givin 30% bonus AP and only 30% bonus AP. When tested it actually gave 45% bonus AP which is the combination of the 75, 200, and 400 stacks. Cassiopeia also kept the 25% CDR which is only listed on the 200 stacks. This extra 15% leads to being able to be up to 200 extra AP late game when she would have hit the 400 stack threshold. Is this the way it is supposed to be programmed? If so, the passive details should be re-written for clarity. If not, the programming needs to be fixed toonly have it be 30% extra AP instead of 45%. However the 25% CDR and heal on E should be kept when hitting the 400 stack mark and don't need to be re-written in the passive as I feel those do explain themselves well enough.

I tested it in a 1v1 match and just bought items and did the calculations to see how the AP should be stacking based on the description vs. how it actually was. Reached over 1100 AP when I should have had ~950. (Yes, I did take masteries and runes into account.)