Create a stunning, intricate and meticulously detailed sci-fi scene. Depict a tall alien with smooth greyish blue skin and an angular head wearing ornate religious robes. This life form is standing in a shallow stream passing through a jagged rocky landscape. The alien is pouring a bizarre liquid from a large canister into the stream. Spectacular emerald green algae is forming at the spot where the peculiar liquid interacts with the stream. This maximalist vision should convey an epic, dramatic, and atmospheric vibe as it would look in a cinematic digital matte painting.