Adaptive Amoeba

{g/u}: Adaptive Amoeba becomes a Beast with reach
and base power and toughness 2/2.
{g}{u}: If Adaptive Amoeba is a Beast, it becomes
an Ape with reach, trample, and base power and
toughness 3/3.
{1}{g}{u}: If Adaptive Amoeba is an Ape, it
becomes a Human with "{t}: Draw a card, then
add {g}{u}." and base power and
toughness 1/1.