Nyan Cat

Flying
Nyan Cat enters the battlefield with {x} candy
counters on it. At the beginning of your upkeep
put a candy counter on Nyan Cat, it get's +1/+1
for each candy counter. If damage would be dealt
to Nyan Cat while it has a candy counter on it,
prevent that damage and remove a candy counter
from Nyan Cat.
—
"Nyanyanyanyanyanyanya."