Jirachi, Wishmaker

{x}{w}{t}: Search for and cast any Instant, Sorcery,
or Enchantment from your library with a
converted mana cost of {x} or less
{w}{w}{b}{b}{b}: Tap target creature. Whenever it
becomes untapped, it is exiled.
It is said to have the ability to grant any wish for
just one week every thousand years.