The Knights who say "Ni!"

First strike, Intimidate.
Whenever an opponent says "it", The Knights
That Say "Ni!" get -2/-2 until end of turn. This
activates only once per turn.
Whenever an opponent says "Ni!", The Knights
Who Say "Ni!" get +1/+1 until end of turn
"Now cut down the greatest tree in the forest,
with a herring!!!!"