SCOTTSDALE – Blanco is 20, but he’s well into his senior years. The Andalusian horse, best known for his role as Shadowfax, Gandalf’s legendary white horse in The Lord of the Rings, will perform at Equi-Dance on Friday and Saturday in Scottsdale. The show is part of the Arizona Festival of Horses 2008 at WestWorld, a weekend horse festival that includes seminars, shopping and entertainment. Cynthia Royal, who will be performing with Blanco, said Equi-Dance would be his last tour. “This will be his last performance on tour before we go to Las Vegas, where we will have a permanently based show,” Royal said. “It is not the performing that bothers him; it is really the long hours on the road.” In the two-hour show, Blanco will perform twice. His first appearance will be as Pegasus. Equi-Dance will showcase ‘Lord of Rings’ horse