Trail of Mystery | Enchantment | | 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. | Raymond Swanland
Secret Plans | Enchantment | | Face-down creatures you control get +0/+1.
Whenever a permanent you control is turned face up, draw a card. | Daarken