The Lubberkin Gwent card features a dark fantasy realism art style, depicting a spectral figure with a haunting presence. The card's design is intricate, showcasing the Lubberkin as a translucent, ghostly entity with ethereal glow effects around its form. The background is adorned with ornate, gothic patterns, and the card's edges are slightly weathered to reflect its in-game lore and usage. The color palette is muted, with shades of blue and grey dominating, giving it an otherworldly and mysterious appearance.