The Isis Stone

A magical stone that was protected by the warriors of the frozen winds. It was hidden after the attack on the monastery in which all of the warriors were killed.
At first, the stone's origins were only known by The Ninja and the first dissolveds, but after recent events, the stone is in danger.
The isis stone has a brother, which is used as a lure to protect the original.
The fake stone is a large floating crystal that gives off a soothing energy to those with power sources in their bodies.
The original Isis Stone, however, is much more complicated.
It can be used to spy on, telepathically speak to, teleport to or teleport those to you who has a power source in their body.
It cannot be used on those without power sources, but anyone can use the stone.

One question remains, however.
This stone can be used to find more of the Ninja's kind, if there be any left.
But why doesn't the Ninja use the stone to search for them?