Blessed Gem

{t}: Add {w} or {u}.
{w}{u}, {t}: Until end of turn, target creature you
control gains "Whenever this creature deals
combat damage to a black creature, destroy that
creature."
A gem of infused titanite. commonly known as a
charm kept by saints. Used in infusion to create
blessed weapons. Special blessed weapons gradually
restore HP and heavily damage reanimated foes.