When the party is rewarded with a Loot card, retrieve it from the box. Its level is #+1 (so it may be with cards separated by the Future Adventures divider).
Any character in the party may take it; when rebuilding (see the Rebuilding section for more details), that character's deck must still conform to their deck list, but they may keep the Loot card although its level is higher than the most recently played scenario's #.
If no character takes the Loot card, put it in the vault.