Pyromancy 4

He nodded to Baltrice, and the image faded from the wall. She grinned in anticipation, overjoyed as Jace began to tremble openly. "In the meantime," she exulted, "the boss has told me that until he's ready to cut you apart, as long as I cause no permanent damage- you're mine!"

Flames erupted on the three open sides of the cell, inches beyond the enchanted bars, and if magic couldn't penetrate the claustrophobic prison, the heat and the smoke could. Jace fell back, arms thrown up to protect his face. His skin blistered, his lungs cried out for air, but he swore, he swore, that he would not scream.

It was an oath he succeeded in keeping for almost a minute.

Agents of Artifice (Magic The Gathering: Planeswalker Book 1), Chapter 30