A captivating and vibrant illustration of a lion roaring in an expressionist style. The lion's mane is ablaze with fiery red hues, creating a stunning contrast against the stark black background. The lion's powerful body is rendered in sleek black lines, emphasizing its strength and agility. The intense, glowing yellow eyes of the lion command attention and evoke a sense of fierce determination. This bold and striking image is a powerful poster that captures the essence of the lion's raw energy and spirit., poster, illustration, vibrant