My guess on Zoea's 888 average would be either a shield involved, or being outside of shadowform (though that would at closest be a 868 average)
That would also be my best guess on Alayne, combinations involving dampen magic don't really come close to a 779 average.
Also, you should yell at those 2 warlocks for releasing the control so quickly, with Siphon and Drain it's them that should be holding it the longest, not a rogue.
