Cleave in Twain

Cleave {2}{b}{b} (You may cast this spell for its cleave
cost. If you do, remove the words in square brackets.)
Exile target creature. [Its controller creates two
tokens which are the same creature type and color
as the destroyed creature. They each have base
power equal to half that creature's power, and
base toughness equal to half that creature's
toughness.]