That effect helps aggressive decks churn through cards at a healthy rate, and it plays into the type of strategy Emberheart Challenger slots right into, with prowess decks often employing pump spells that target their own creatures
This means that players on other platforms will not be able to get the bundle, even for purchase with real money
Even if Ash Blossom is used on Sweet Dreams, you can still search
The Pokmon Company has not mentioned any new information regarding the re-release of rainbow Pokmon cards, and since Sword & Shield Silver Tempest, they have not printed a single rainbow rare Pokmon card
The Standard format is going to rotate tomorrow, September 17, 2021
It also has the familiar disadvantage of the monster summoned by this effect being banished, but in a Ghoti deck, that's an advantage