Flame Titan

Still she was casting. Even as the carnage from the fireball spread, her muscles tensed once more, her lips parted with something like a screaming grunt. His skin tingled, and he recognized the feel of something forcing its way into the world from outside.

It erupted from the swamp at the heart of the fireball's impact, a volcano of fire and fury, and the shallow water around it vanished in a hiss of steam. Humanoid only by the most generous use of the term, it towered above the bamboo stalks, above even some of the trees. It glared about it with eyes of fire, lashed about with hands of the same, for that was all it was. Fire: raw, primal, elemental.

The crackle of its flames was the cackling of Baltrice as it advanced on the village, an inexorable titan of agony and death. Turning their attentions away from the burning huts, the soldiers of the nezumi clan formed a defensive line before the oncoming terror, but few had any illusions that they could do more than die with honor.

Agents of Artifice (Magic The Gathering: Planeswalker Book 1), Chapter 14