Hidden Wildcat

{b}{t}: If Hidden Wildcat is a kitty, it becomes a cat
with base power/toughness 3/3.
{2}{b}{t}: If Hidden Wildcat is a cat, it becomes a
cougar with base power/toughness 4/4 and gains
first strike.
{3}{b}{b}{t}: If Hidden Wildcat is a cougar, it
becomes a lion with Double Strike, trample,
and base power/toughness 5/6