Phyrexian Portal

Oracle Text

3: If your library has ten or more cards in it, target opponent looks at the top ten cards of your library and separates them into two face-down piles. Exile one of those piles. Search the other pile for a card, put it into your hand, then shuffle the rest of that pile into your library.

Card Rulings

10/4/2004 The two piles don’t have to have the same number of cards in them. One of the piles may have zero cards.