Nagato, Leader of Iga

Eminence - Creatures in your hand and library
are Ninja in addition to their other types.
Ninjas in your hand have {x}: Ninjutsu where
X is its converted mana cost.
At the beginning of each combat, create a 0/1
black Ninja creature token that has
"This creature cannot be blocked."
Attacking ninjas you control get +X/0 for each
Ninja you control.