If you have the Dark Explorers or Sun and Moon prints, you can still evolve but you can't use it during your first turn or on a Pokmon that was put out that turn
This card is at its best in explosive decks that struggle against stax pieces, and at its worst in highly interactive decks, which is why I personally dont have experience with it, because I tend to play the exact wrong decks for it, but when youre the kind of deck that wants it, it often works as more versatile instant speed sweeper
Some back faces have abilities that allow them to transform back to their front faces, but for back faces like Hades, it's a one-way journey, although some other spells and abilities may still cause it to transform back
In short, the risk that youll lose money investing in Pokmon cards is just way too high
If an Adventure spell leaves the stack in any way other than resolving (most likely by being countered or by failing to resolve because its targets have all become illegal), that card won't be exiled and the spell's controller won't be able to play that card from exile later
Athreos, Shroud-Veiled This is an odd commander choice, in a lot of ways