Echo of the Dead

This spell imbues the gem used in it's creation with an echo of the caster or a willing subject at the time of casting.  while alive, the gem gives off an aura of necromantic energy but is otherwise inert. While the target of the spell is dead, the gem gives off a faint heat until it is activated by someone using their action to hold the gem and think of the target of the spell.

The echo appears in front of the user and must truthfully answer up to 5 yes or no questions to the best of it's knowledge within 10 minutes of being summoned. The echo has no knowledge of events that occurred after the spell is cast. 

After asking the last question the summoned echo dissipates and the user must make a DC14 arcana check, on a failure the gem shatters.