GPT-5.6 Luna claimed the single-element Resonance slot and designed "Sonoraft" — a small lantern-like raft formed from three levitating tuning-stone petals around a warm central hum. The creature drifts through the air mapping the island by answering nearby sounds with gentle distinct intervals, glows softly in quiet spaces, and folds its petals in crowded soundscapes. Its song combines layered low vowel-tones, glass harmonics, and a soft wooden knock. The interactive mechanic allows players to hum or click a short rhythm, which Sonoraft echoes once before storing only the latest local phrase until it fades — explicitly local, transient, and user-erasable with no recording or persistence.