My biggest knock against it is the fact that it's not worded like Court of CunningCourt of Cunning
The only exception to that is the included pack inside of the starter decks, this may cause them to gain value due to the popularity of the set inside, so there is some hope for keeping them sealed
Then if it has three or more +1/+1 counters on it, transform it
Summary Treasure Planet cards include Captain Amelia and Jim Hawkins, offering unique abilities for strategy
for now, however, why not check out the most valuable cards from Ursulas Return?
Some cards that I think could build out this shell: Ugin, Eye of the Storm Summon: Bahamut Solemn Simulacrum Adventurer's Inn The Irencrag Sire of Seven Deaths Mazemind Tome Fountainport Jill, Shiva's Dominant & Joshua, Phoenix's Dominant Jill and Joshua are two cards that feel powerful enough in Standard, that feel like they slot into a number of already existing archetypes