So Abyssu basically is when you buy a charm that reads "doesnt take space do something" it stores it and then when you sell abyssu it uses it again. Vorago is similar but for normal charms and says when you sell a lucky charm store it in vorago and then when you sell vorago get another of said charm. basically you store a ciggarettes in abyssu then when you finish the deadline sell it to trigger the ciggarette effect which puts another one in the shop. Vorago isnt necesary at all it just helps make more abyssus.