Windborn Hydra

Flying, lifelink.
~ enters the battlefield with 4 +1/+1 counters on
it. When you gain life, you may remove 2 +1/+1 counters from ~. If you do, draw a card.
Adapt 2 {3}{w}(If this creature has no +1/+1 counters
on it, you may pay . If you do, put 2 +1/+1 counters
on this creature.)
Monstrous 2 {w}{w}{w}{w}(If this creature is not monstrous, you may pay its monstrous cost. When you
do, put 2 +1/+1 counters on it and it becomes
monstrous.)