Ent Flayer

Flying
{2}{u/r}: Ent Flayer becomes a Dragon with base power and toughness 3/3.
{3}{u/r}{u/r}: If Ent Flayer is a Dragon, it becomes a Dragon Bird with trample and first strike.
{4}{u/r}{u/r}{u/r}: If Ent Flayer is a Bird, put five +1/+1 counters on it.