The Descent: Journeys in the Dark (Second Edition) Wiki
Dangerous Knowledge
2 Threat tokens to Purchase
Exhaust this card after a hero discards an overlord card from your hand or forces you to place an overlord card on top of your deck. That hero test Knowledge. If he fails, he suffers Heart equal to the Shield rolled in excess of his Knowledge value. If he passes, gain 1 threat token.
Vital Essence 4/12 No Cost