Nestled between the towering cliffs of the Zorian plateau, lies a vast cavity that is wide enough to swallow an adult bull elephant with enough space to spare for a small herd of draft horses on either side. There you will find gold, an abundance of it. But what is that you say? That the natives tell you that it is a place of death and home to hideous monster that will devour you? Ignore the savages. They only seek to protect what they are too indolent to grab for themselves.
-A Khanate offical assuring a bunch of miners.
The spirit of a creature trapped in amber cannot escape to it’s afterlife / next incarnation / whatever.
Such trapped spirits can be contacted by those who know the right rituals and magical power derived from them – typically the power to control one individual of that species.
Can by quite powerful if the creature is a colony insect (ant, bee, wasp, etc) – simply control the queen and you command the whole colony.