The Last Ronin

Mutate-{1}{u}{r}{g}
Haste, First Strike
overwatch-The Last Ronin gets a +1/+0 for a Ninja, a Turtle, and a Spirit you control.
Whenever one or more Ninja, Turtle, or Spirit blocks, target player loses life equal to the amount of Ninjas, Turtles, or Spirits you control.
{t}:Each creature in your hand has Mutate.The mutate cost is equal to the amount of mana it costs to cast minus {1}
Creatures with defender can attack.