Miirym (Sentinel Wyrm)

A ghost of a formerly silver dragon bound to Candlekeep's subterranean vaults; claims ownership of any written work that enters her domain, is centuries‑isolated and unstable, and becomes more dangerous when left without a daily conversational guardian.

Yona serves as Miirym's attendant and liaison in the subterranean vaults; Miirym questioned the party about the surface world and permitted their passage after Yona promised to relay their stories.