Hell-bent Furyblade

When Hell-bent Furyblade enters the battlefield,
put a curse counter on up to two target creatures
an opponent controls.
As long as an opponent controls a creature with a
curse counter, Hell-bent Furyblade has indestructible and "Whenever Hell-bent
Furyblade deals combat damage, it deals 2
damage to you."
Bargains to make the weak strong are dangerous, but the death of everyone you love is worse.