Erika, the Mortal Wing

Flying, Endurance 1
Whenever Erika, the Mortal Wing would be
dealt damage, prevent X of that damage, where
X is the number of +1/+1 counters on Erika.
{w/b}{g}{g}, {t}: Erika deals damage to herself equal
to 1 plus the number of +1/+1 counters on her.
Kin to the Archangels, she protects the living.