seamless pattern, abstract print with retro motif: hand drawn amanita mushrooms on a dark black background.

mushroom pattern drawing seamless color repeat plant vector texture doodle print fungus retro 70s motif amanita style colorful design autumn ornament poison wild botanical illustration background dark red abstract decorative cartoon art graphic nature black sketch vintage season paper isolated green drawn cute forest magic trippy groovy floral 60s wallpaper motif: hand mushrooms background surface fly agaric mushrooms