Thanks for all the input. I ended up going with:
because I felt it fulfilled the role that I wanted Elesh Norn, Grand Cenobite
to fill by being a strong finisher for the "go wide" theme but in a much fairer manner. Additionally I liked that it could still be valuable if targeted by removal or even sacrificed or discarded for value.
I actually replaced another one of my white 6+ drops, Dearly Departed
because I just felt it was too durdley and way too hard to get online to maximize value. I replaced it with:
which is a card I am pretty excited about. Its cmc and abilities feel fairly costed and it goes well in a lot of decks: lifegain, going wide, flyers, and just generally a decent control finisher.