Ninja Grandmaster Hattori

Ninjutsu {w}{w}{w}
When Ninja Grandmaster Hattori enters the battlefield, if it was cast, you may search your
Library for a Ninja creature card and put it in
your graveyard; shuffle your Library after.
If a spell or ability would return Ninja
Grandmaster Hattori to you hand, you may
return it to the battlefield tapped, but only if
you control another Ninja.