Phyrexian Portal is a rare Artifact card from Alliances (ALL), collector number 126. Current market price: $1.84, TCGplayer market prices via Scryfall.
{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.