Vortex Stone is an item which allows access to Silver Trench.
Vortex stone being created

Vortex Stone created.


The Vortex Stone was created by Moltres, Zapdos and Articuno in order to give the player access to Silver Trench, where Lugia is. It is descripted as the combination of the power of fire, ice and electricity.

Despite being an item, it isn’t seen in the Team Toolbox nor the storage. It cannot be sold or bought.