Sending Stones

Sending stones come in pairs, with each smooth
stone carved to match the other so the pairing is
easily recognized. While you touch one stone,
you can use an action to cast the sending spell
from it. The target is the bearer of the other
stone. If no creature bears the other stone, you
know that fact as soon as you use the stone and
don't cast the spell. Once sending is cast through
the stones, they can't be used again until the next
dawn. If one of the stones in a pair is destroyed,
the other o