Pretty cool! She kinda boils down to having 18 life which is pretty good.
Of note,
Brainiac and
Atom Eve can remove markers from Event heroes, which make them pretty hefty counters to her.
I'd love if there was a way to give her SA a bit more pop, to differentiate from the tendrils? The clear sight removal is cool, but maybe something that does "burn damage"? Because on HER turn, it's basically the same as her normal attack with an extra die or two.
Cool take on a big beasty though!