Gilles de Rais

Wither
Sacrifice a creature: Put an amount of +1/+1 counters on Gilles de Rais equal to the sacrificed creature's toughness.
{x}{b}, {t}, Remove X +1/+1 counters from Gilles: Put X -1/-1 counters on target creature.
"Jeanne, I will free your soul from the terrible
prison of God's cruel curse!"