Rule 715.2 · Adventurer Cards
The text that appears in the inset frame on the left defines alternative characteristics that the object may have while it’s a spell. The card’s normal characteristics appear as usual, although with a smaller text box on the right.
Subrules
If an effect refers to a card, spell, or permanent that “has an Adventure,” it refers to an object that has the alternative characteristics of an Adventure spell, even if the object currently doesn’t use them.
The existence and values of these alternative characteristics are part of the object’s copiable values.
Although adventurer cards are printed with multiple sets of characteristics, each adventurer card is only one card. For example, a player who has drawn or discarded an adventurer card has drawn or discarded one card, not two.