If the backup card enters with additional abilities or gains abilities with the backup trigger on the stack, those arent added to the targeted creature
While those older cards focused strictly on hand-refreshing, Misty's Vitality acts as massive Water-type acceleration, letting you search your deck for up to 4 Basic Water Energy cards and attach them directly to one of your Pokmon
In either scenario, timing is everything when it comes to playing this card since your opponents will usually get to take full advantage of its mana doubling before you do
You do really want all three chapters for the mana cost, but it's nice that youre typically going to get at least a three-for-one should it flip
However, if even a single card falls off your head, you have to exile all of the cards and sacrifice this enchantment
I generally set exiled cards aside, face up, farther out than my graveyard, or tilted 90 degrees underneath my graveyard