If you have to recast Sephiroth, you can flip it again and stack your emblems
If it later returns the creature card to the battlefield (as Oblivion Ring or Flickerwisp might, for example), the creature card will return to the battlefield as a new object with no relation to its previous existence
Like, would it make sense for this Pokemon to use this kind of attack, or is it behaving like you would expect this Pokemon to
Subjective Reality The Esper deck pivots away from the theme of permanent types into library manipulation
Horizon Canopy Part of the Horizon land cycle
You can always opt to buy some Evolving Skies Booster Boxes and try your luck, but eBay listings are getting equally expensive for those - even if they're some of the best Pokmon packs to buy, we'd suggest buying singles over trying your luck at ripping packs