This card represents an angel sounding a trumpet: one sees immediately rising from the ground an old man, a woman, a naked child.
Card makers who forgot the significance of these cards, and more still their numbers, saw here the Last Judgement; and to make it more obvious, they put into it something resembling tombs. Removing these tombs, this card is also used to indicate the creation, arrived in time, at the beginning of time, which number XXI indicates.