Useless Island

{t}{u}{u}: search your library for a card named
"Useful Island" and put it in your hand.
If you use any ability of Useless Island other than
the one below, exile Useless Island. You may
search your deck for a basic island and
put it into play tapped.
{t}: Add {u}. You may only use this mana to cast creature spells. Use this ability only when you
could cast a sorcery.