Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle their library.
3/14/2017 If the targeted creature becomes an illegal target by the time Path to Exile would resolve, the entire spell doesn’t resolve. The creature’s controller won’t search for a basic land card.
3/14/2017 The controller of the exiled creature isn’t required to search their library for a basic land. If that player doesn’t, the player won’t shuffle their library.