Path of Asura is a skill every character starts with from the beginning, you can use it to teleport back to places you have previously visited and are bound to. This allows for quick travel around the world of Hyboria. To change the location you are bound to, you need to find an NPC called a Wayfarer of Asura who are in most major locations.

NPC	Region	Location
Ili	Khemi	984,1226
Pharsis	Khopshef Province	464,977
Unknown	Atzel's Approach	274,53
Dathos	Poitain	1200,875
Medinjai	Thunder River	517,1806
Juvis	Wild Lands of Zelata	264,736
Malia	Tarantia	807,565
Servius	Tarantia (Noble District Tavern)	765,1000
Nidd	Conall's Valley	610,560
Narmer	Purple Lotus Swamp	1046,1085
Tanor	Conarch Village	298,529
Braennagh	Field of the Dead	1153,566
Laug	Eiglophian Mountains	384,395

As of 27 May 2008, If you have the "invulnerability buff" after resurrection or zoning, Path of Asura is Instant Cast.