The League of Nations

You may only activate League of Nations abilities
once per turn, on your turn, and if your League
Delegate is in the League of Nations.
{2}: Return target creature from your graveyard to
your hand.
{4}: Draw two cards.
{6}: Search your library for a League card, reveal
it, put it into your hand and shuffle your library.
{8}: Destroy target permanent.
{x}: This card deals X damage to target creature.