Then, from across the camp, Hazel yelled in pain. Arion screamed as the giant got a lucky shot. His staff sent horse and rider tumbling over the ice, crashing into the ramparts.
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She was half-buried in a collapsed pile of snow-bricks. Arion stood over her, trying to protect her, rearing and swatting at the giant with his front hooves.
The giant laughed. “Hello, little pony. You want to play?”

The Son of Neptune, Chapter XLVI