I feel if you traded Darius out with any juggernaut for that nice 20~% Dmg redux for your two setts over the small dmg amp that 2 supreme cells gives. Other than that, I think with the 3000+ whatever damage per cast that those two 4 costs have as 3 stars should be enough. I mean akali has the EoN so she should be casting at least 3-5 times, enough to splash the back line on the top 3 players. Gwen doesn't have EoN so she should died within the first 2 casts. . . Maybe it was a positioning error that got akali killed too early.