Holy Hand Grenade of Antioch

{t}, Sacrifice this artifact: Destroy all creatures
you don't control.
First shalt thou take out the Holy Pin.
Then, shalt thou count to three, no more, no less.
Three shalt be the number thou shalt count, and
the number of the counting shall be three. Four
shalt thou not count, nor either count thou two,
excepting that thou then proceed to three. Five is
right out!