Mitsunmei, Shadow Trinity

Commander Ninjutsu {1}{u}{b}
Creature spells in your hand have Ninjutsu.
Ninjutsu costs are equal to the colors in its
converted mana cost plus {3}.
Up to three times each turn, when Ninjutsu triggers, you may cast an instant or sorcery
from your hand without paying its mana cost.
Partner (You can have two commanders if both have partner.)