Yoshi, The Peaceful Monk

Defender, first strike, vigilance
If a creature or a spell controlled by an opponnent deals damage to you, if there is
no +1/+1 counter on Yoshi, The Peaceful
Monk, put a +1/+1 counter on it.
As long, there is a +1/+1 counter on it,
Yoshi, The Peaceful Monk loses defender.