These can give you a maximum of 2.4kk of experience if you are level 200+. You can only deliver them if the event has not yet failed, so even if it is expensive to buy or get them, it is better to deliver them as quickly as possible. You can get them from the monsters of the event or if your server manages to be victorious as a reward you will get some. If you are a low level it is better to deliver the shards little by little to gain a little more xp
LUCIUS IN THE EVENT:
LUCIUS WHEN WIN THE EVENT; KAZORDOON.