Valra, Savior of Man

+1: Exile target tapped creature
-3: Create a 3/3 white, blue, and red legendary Praetor creature token with "This creature cannot be sacrificed".
-7: Search your library, hand, and graveyard for cards named Retterbrand, Valra's Fury and Blitzmund, Valra's Storm. Put them onto the battlefield.