Sora, Keyblade's Chosen

When Sora, Keyblade's Chosen enters the battlefield, search your library for Kingdom Key
and put it into your hand. Shuffle your library.
Sora, Keyblade's Chosen get +1/+1 for each
other legendary creature your control.
{1}: Play Kingdom Key from your hand, graveyard,
exile, or from outside the game without paying its
mana cost.