Imprint — When Ugin’s Labyrinth enters, you may exile a colorless card with mana value 7 or greater from your hand. : Add . If a card is exiled with Ugin’s Labyrinth, add instead. : Return the exiled card to its owner’s hand.
In the rare case where more than one card is exiled with Ugin's Labyrinth's imprint ability (likely because the triggered ability was copied or the ability triggered a second time), its last ability will return all such cards to their owners' hands.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.