Blue, Woodland Shapeshifter

{g}: Choose one—Until end of turn, Blue
becomes a Cat with base power and toughness
4/4 and gains trample; or, Until end of turn,
Blue becomes a monkey with base power
and toughness 1/1 and gains unblockable;
or, Until end of turn, Blue becomes a Bird
with base power and toughness 2/2 and
double strike. Activate this ability only
once each turn.