If you don't mind the need to rely on chance, there's no two ways about it: Leafeon ex will be able to use its Ability (which we'll get into shortly) to fuel Celebi ex with heaps of Grass Energy , at which point there is a distinct statistical likelihood that Celebi will dish serious damage
I didn't draw any Plummets , and, yes, I can disrupt this combo if I main deck my four Plummets
Some people definitely hate it
To give you an idea of what Glimpse Elves might look like, this was the original no ban list Modern event, and LSV crushed with his take on Elves
Now, you do have to be playing all or nearly all Humans to push this card this hard, but Humans are one of the tribes that have had the most intrinsically good cards, anyway
Meanwhile, your counters will also be gaining you life as well