Hellblazer 1

By the time he dropped lithely to the ground behind the horde, he could see they were undead. That helped. Dack wasn’t a necromancer, but he’d once stolen a hellblazer ring from a vampire on Dominaria. He’d long since fenced the ring to J’dashe, but not until after he’d leached and learned its spell, which he immediately turned upon a mineral-coated warrior in the phalanx’s rear line. The creature started to smoke, burning from the inside out, finally bursting into flame.

It dropped to the cobblestones as a charred husk. Dack smiled. And then looked a little panicked as the entire back line of the horde turned to face him.

This is a problem.

The spell had come from a ring—which was intended to be placed on the would-be victim’s finger, and thus was only designed to kill one undead thing at a time. He immediately turned its power on the closest, and it smoked and stumbled to its knees. But before the job was done, three other creatures were closing in.

War of the Spark: Ravnica, Chapter 20