Buken

At the beginning of the end step, turn Buken
face down. (It is a 2/2)
Morph {2}{b} (You may cast this card face down as
a 2/2 creature for {3}. Turn it face up any time for
its morph cost.)
When Buken is turned face up, it gets +3/+0 and
gains first strike until end of turn.