[Sorn]

There's a write-up on it here.

Getting to Velious by port

There are four zones to which you can port on Velious: Iceclad Ocean, Great Divide, Wakening Land, and Cobalt Scar. All but Iceclad Ocean require a special tooth for porting, both for the porter and the portees. Anyone can port to Iceclad without a tooth of any kind. To retrieve these teeth, you must travel to the zones the old-fashioned way and pick up the ground spawns at the center of the dragon portals. The teeth are soulbound, so if you die, they will travel with you if they were on your person when you died.

These are increasingly difficult to get the further into the continent you go, with the most difficult being the Tooth of the Cobalt Scar. This tooth, because it is the most difficult, will allow you to port to GD, WL and CS. Tooth of the Wakening Lands will allow you to port to GD and WL. Tooth of the Great Divide will only allow you to port to GD.

To get the Tooth of the Cobalt Scar, you must first get a Shrine Key to pass through Skyshrine into Cobalt Scar.

Take care both in porting in and retrieving the teeth. Wuoshi likes to hang out in the dragon portal in The Wakening Land.

The Shrine Key will allow the whole group to zone into Skyshrine, so all you really need is a friend with a key to get into CS.