For consideration: I run
Reclamation Sage in pretty much every green deck, but I never play
War Priest of Thune or
Manic Vandal - I value the extra flexibility very highly, but consider the other two to be too narrow.
So, is playing
Seeds of Innocence (or
Creeping Corrosion) worth it? I'm not really sure. I've considered them for my Tasigur deck (which runs zero artifacts), but haven't actually tossed them in yet. Instead, I'm running
Bane of Progress and
Wave of Vitriol - I value blowing up enchantments pretty highly, even if that sometimes includes my own. My general impression of the format is that artifacts tend to see a lot more play (largely because of mana rocks), but the enchantments that get played tend to be much scarier.
Still, it's an incredibly efficient mass removal spell, and it's easy to make asymmetric - a lot of green decks can get away with running few or even zero artifacts. And if you're running an enchantress deck, you're going to want your enchantments to stick around, which makes them a good fit for this sort of effect.