Relics contain knowledge and treasure from the former Guardian Dragon and Talions. You can open the item through the Relic Laboratory to earn various rewards!
It requires a considerable amount of time to open the Relic. The higher the grade, the more time it will take to open one.
Once time elapses, you can open the Relic and obtain the items inside. One Reliquary is available as a default, and you can add up to 3 more to use a maximum of 4 Reliquaries.
You can exchange unused Shards for other Shards in Exchange menu.
The amount and cost of required Shards depend on the quality of the item you want to exchange for.