Zant, Usurper King

Zant, Usurper Kings power and toughness are equal to the highest power and toughness among exiled creatures.
{x}Select one creature card in any players graveyard with converted mana cost X or less. Exile that card and Zant, Usurper King gains any abilities printed on that card. Zant, Usurper King may only have the abilities of one card exiled by this ability at a time.