The most important ability of a táltos is a meditation or spiritual trance called "révülés" (verb: révül); in this state, he could heal wounds and sickness or learn hidden truths by "sending their soul among the stars". The táltos was chosen by gods or spirits for a specific calling in life and had the duty to communicate with the entire Hungarian nation in a time of danger, to warn against invading armies or an impending cultural collapse.