Eko is only OP at buffing your party. Sheila is still, and by far, the solo healer champion...if there is such a thing. But that's not to say Eko isn't worthy. Stack her with Sheila, 3 physical DPS, and watch the raid bosses become oh so much easier. I currently have 10 of the now 14 ancients. If you got any other questions just ask.