It deals 20 damage, plus 20 additional damage for each Pokmon on the bench of both players, and it also makes every Dragon-type Pokmon on the board weak to Psychic-type Pokmon, which provides Gardevoir ex with a notable advantage in those matchups
The other binder, the Rainbow Island set designed by Keiko Fukuyama, featured the Pokmon Mew, Pidgeot, Onix, Togepi, Ivysaur, Raticate, Ledyba, Jigglypuff, and Butterfree
Additionally, the process of deleting a card from a set is a bit hidden, requiring a long press (05:11), which might not be immediately intuitive for all users.
The only way that Crucible of Fire will escape bulk pricing again is if there are a lot of very small, very good dragons in the next block
When they do, they regularly fetch high prices