if an opponent challenges her, they (and any other opponents in the game, if youre playing Lorcana with more than the standard 2 players) must discard a card
The boost you get from countering a two or three drop and jumping to five or six on your next turn is a much greater swing than countering a four drop and then having 8+ mana for the main reason that you don't have that much useful to spend that kind of mana on very often and if you do it is not as significant as an earlier mana boost
I learned to draft during the Odyssey block
I dont think itll be getting a resurgence any time soon, sadly, which is a shame for such a beautiful card
There are heaps of different kinds of bundles, collections, pre-made decks and then the Core Set 2020 - Deck Builders Toolkit
Its expensive, and it makes me wince - but I know Im probably going to be there for this thing on day one