Magical Mister Ninja Cat

Ninjutsu {r/g}
Magical Mister Ninja Cat must enter through Ninjutsu or you may play Magical Mister
Ninja Cat without paying its casting cost if a
Ninja you control has been destroyed this turn.
When Magical Mister Ninja Cat is sent to your graveyard, you may return a spell with subtype
Jutsu from your graveyard into your hand.