avacyn - clashes with nahiri

From where he stood, it took Sorin a moment to realize what was happening, but through the dust he saw Nahiri raining down blows with her still-glowing sword. The blade cut through the air, leaving trails of orange light as it went. Sparks leapt off of Avacyn's spear as she deflected the onslaught. But the blows were too many, and too fierce. Soon, Avacyn was in retreat. She tried to fly, but Nahiri rose up above her on another column of stone, forcing the archangel back to the ground with her unrelenting attack.

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PROMISES OLD AND NEW