Twenty thousand portraits that exist only in the angle of their tiles. Every card is laid turned away; when each one turns back about its own centre, by quarter turns, the face appears.
Rarity is something you can see. Each tier opens visual traits the tiers below it never get: a coloured or night ground, a field of a single card family, or a dense field of small cards, a finer grid, blueprint lines. Rank 1 has the rarest combination of all nine traits.