Then choose 2 basic Energy cards from your discard pile, show them to your opponent, and put them into your hand
As such, if Vivi has the power for it, it's better to use Vivi's effect for mana rather than from lands or mana rocks to cast spells on your turn
Then put the other cards exiled this way on the bottom of your library in a random order
Later in the game, the impact of this card is reduced a bit, since just one mana probably won't make that big of a difference on turn fifteen or more, but the explosive early game it can provide is impossible to ignore
So, let's go over perhaps the most important part: finding product for your Prerelease
But more unusual are the set's Eternal Night Land cards