Rest in peace

A dark-haired character with a snake-like creature on their back stands in a dimly lit, purple-hued environment, facing another character who is surrounded by a glowing, circular energy formation. The scene cuts to a character with white hair and a long staff standing in a snowy landscape, then to a close-up of a hand reaching out through water, followed by a shot of a character with long dark hair making a hand seal, all set against a dark, atmospheric background.