Trail of Mystery [Khans of Tarkir Prerelease Promos]

Set: Khans of Tarkir Prerelease Promos Type: Enchantment Rarity: Rare Cost: {1}{G} Whenever a face-down creature enters the battlefield under your control, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.Whenever a permanent you control is turned face up, if it's a creature, it gets +2/+2 until end of turn.