Xerdle, Bishop of the Bog

-2: Target creature becomes a 0/1 blue frog and loses all of its abilities.
+1: Search your library for a basic land, and put it on the battlefield tapped. Create a 1/3 green, defender, frog creature-token with hexproof.
-2: Reveal the top four cards of your library; put all frog creature spells into your hand, and the rest on the bottom of your library.