The Sign card, Revelations family, yin polarity, evokes a modest clue catching the attentive eye. It signals that a seemingly minor detail deserves consideration. Drawing this card invites you to go back to something you may have dismissed too quickly.
In Oradia's mirror-card system, Sign answers to Vision: the two don't oppose each other, they answer each other, like two sides of the same movement.
This page gives the card's general meaning. In a real draw, the Sign card is always read in relation to the other cards drawn and the intention set at the start — it's that combined reading, unique to each draw, that the online oracle develops.