Apparently, players love their morphs
The middle option, destroy target enchantment, is subtle but very important, as the targeting allows you to destroy an Always Watching or Evolutionary Leap even with a Gryffs Boon or Oath of Nissa on the battlefield
See also: Binder layout planner What are the chase cards in Arceus? The top chase card in Arceus is Gengar 16 (Rare) at $594.49
It stands as one of the most elegant cards in the expansion, so it is not too much of a surprise that it is also one of the most valuable cards in Obsidian Flames
This also has an interesting interaction with the rulings
Lastly, Sigilyph also works as an initial Basic Pokemon to play while you build Alakazam and Jynx on the bench, as it has a 1 Energy cost to attack, and this attack will also cause you to draw a card with each use - hopefully getting the required evolutions needed to get your Ace into play quickly