So I was fighting Takara and I found it interesting that with both Harness Magicka with 12k spell damage absorption as well as Hardened Ward with another 12k damage absorption both active (as well as 28 points into Bastion for another 10% damage absorption), they seem to mitigate 0% of Takara's Impending Storm. I'm not sure if that's a bug or not for that attack to ignore those shields, but I thought I'd bring it to your attention.
-Aletheion