Star and Savior

"The League had routed Hollstadt's knights and recaptuerd most of the kingdom, but there was still the castle to deal with before Altea would be free; the mage-dragon Morzas remained entrenched within its walls. Unlike General Camus who preceded him, Morzas had been a cruel warden, slaughtering many innocent Alteans at the slightest provocation. Marth roiled to think such a monster still sat upon his noble father's throne."

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Star and Savior is chapter 17 of the game Fire Emblem: Shadow Dragon.