Ogre Savant

Oracle Text

When Ogre Savant enters the battlefield, if U was spent to cast Ogre Savant, return target creature to its owner's hand.

Card Rulings

2/1/2006 If was spent to cast Ogre Savant and no other creatures are on the battlefield, the Ogre will have to return itself.
2/1/2006 The ability is not optional.