Whenever a face-down creature you control enters, 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.
"Our Elvish Hunter Taaveti led us swiftly along hidden paths through the dense forest. We caught the Orcs from behind, and completely by surprise." —Lucilde Fiksdotter, Leader of the Order of the White Shield
Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another until end of turn. Cipher
"An ancient court mage unified the houses into guilds to serve Zhalfir above their own interests. Even during the civil war, the guilds stood together, a testament to the wisdom of Teferi." —Afari, Tales