The Eldar are a fictional race in the Warhammer 40,000 universe, known for their advanced technology and psychic abilities. They are often depicted as a highly sophisticated and ancient species, with a rich cultural heritage and a deep connection to the Warp, a dimension of psychic energy. The Eldar are divided into various factions, including the Craftworld Eldar, who live on massive space-faring vessels, and the Dark Eldar, who inhabit the dark city of Commorragh. Historically, the Eldar were once the dominant race in the galaxy, but their civilization declined due to their own excesses, leading to the birth of the chaos god Slaanesh. This event caused a catastrophic fall, resulting in the loss of many Eldar lives and the fragmentation of their society. Today, the Eldar strive to preserve their remaining culture and prevent further decline, often engaging in conflicts with other races, such as the Imperium of Man