A whimsical illustration of elongated ravens with enormous moonstone eyes that hold ancient secrets in dark whimsical art style, perched on twisted grandfather clocks while measuring time with hourglasses made of starlight, their impossibly long feathers flowing like liquid shadows, digital painting with mystical brushstrokes showing iridescent black feathers catching moonlight, purple lavender and glowing blue cornflowers growing through the clock gears, twilight meadow background with floating timepieces, characteristic Tim Burton inspired design with the ravens' eyes reflecting past and future in swirling patterns