The Pillar of Zech is a quasi-Masonic secret society that exists throughout the continent of Laurentia. The goals of the Pillar are the active promotion of the Seven Princely Virtues (courage, honour, independence, intelligence, integrity, piety and revenge) across the world.
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.