Spirit of Ninjutsu

Shadow
Instead of paying Spirit of Ninjutsu's mana cost,
you may instead exile a card with the Ninjutsu mechanic from your graveyard.
Distraction {u}{b} (When you pay the distraction cost,
you may put Spirit of Ninjutsu into your graveyard.
If you do, target creature you control gains Shadow
until end of turn.)