Yuffie Kisaragi,Materia Hunter

When Yuffie enters the battlefield you may
search your library for a Materia. Add that
card to your hand and then shuffle your library.
Ninjutsu {u}{b} ({u}{b}, Return an unblocked
attacker you control to hand: Put this card onto
the battlefield from your hand tapped and
attacking.)
{ut}: Return Yuffie to your hand