|Game art from Divinity 2: Developer's Cut, which includes the Dragon Knight Saga -- Ego Draconis and Flames of Vengeance.
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After entering the Hall of Echoes for a second time, the player character somehow accesses the past or possibly Ygerna's memory. In this grey dream sequence (?) the Dragon Knight interferes with the past and saves Ygerna from death, causing her to reawaken in the real world.