Updated August 11, 2023 by Joe Parlock: The Pokemon TCG has changed a lot
If you attempt to put an Aura onto the battlefield this way and Danitha is no longer on the battlefield or that Aura can't legally be attached to Danitha, that Aura does not enter the battlefield at all
Shortly after the game's release, somebody calculated that it would cost Pokemon TCG Pocket players around $1,500 to complete the Genetic Apex expansion if they were to use real-world money, although the addition of trading since then has thankfully made getting immersive Mew a little easier
The result of this interaction was previously unintuitive to many players: since that Saga had no chapter abilities, the game defined the "greatest number among its chapter abilities" as zero, and no matter how many lore counters that Saga had on it, it would be sacrificed as a state-based action once it wasn't the source of a chapter ability on the stack (usually right away)
But Art Directors Tom Jenkot and Zack Stella (and the rest of the crewits always a team effort) have literally changed the game with their inclusions, and opened doors not thought possible even five years ago