Phyrexian Portal

Artifact, 3 (3)
{3}: 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. Activate this ability only if your library has ten or more cards in it.¹
Illus. Pete Venters

Gatherer Card Rulings [Nov 2009]

• 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.

Format Legality	Legal in Vintage, Legacy, MTGO Classic Banned in Extended, Standard
Printings (2/7)	Alliances (Rare) MTGO Masters Edition II (Rare)